Blindness cortical. Medical search

The inability to see or the loss or absence of perception of visual stimuli. This condition may be the result of EYE DISEASES; OPTIC NERVE DISEASES; OPTIC CHIASM diseases; or BRAIN DISEASES affecting the VISUAL PATHWAYS or OCCIPITAL LOBE.

Failure or imperfection of vision at night or in dim light, with good vision only on bright days. (Dorland, 27th ed)

Total loss of vision in all or part of the visual field due to bilateral OCCIPITAL LOBE (i.e., VISUAL CORTEX) damage or dysfunction. Anton syndrome is characterized by the psychic denial of true, organic cortical blindness. (Adams et al., Principles of Neurology, 6th ed, p460)

Vision considered to be inferior to normal vision as represented by accepted standards of acuity, field of vision, or motility. Low vision generally refers to visual disorders that are caused by diseases that cannot be corrected by refraction (e.g., MACULAR DEGENERATION; RETINITIS PIGMENTOSA; DIABETIC RETINOPATHY, etc.).

Filarial infection of the eyes transmitted from person to person by bites of Onchocerca volvulus-infected black flies. The microfilariae of Onchocerca are thus deposited beneath the skin. They migrate through various tissues including the eye. Those persons infected have impaired vision and up to 20% are blind. The incidence of eye lesions has been reported to be as high as 30% in Central America and parts of Africa.

Partial or complete opacity on or in the lens or capsule of one or both eyes, impairing vision or causing blindness. The many kinds of cataract are classified by their morphology (size, shape, location) or etiology (cause and time of occurrence). (Dorland, 27th ed)

Persons with loss of vision such that there is an impact on activities of daily living.

Dryness of the eye surfaces caused by deficiency of tears or conjunctival secretions. It may be associated with vitamin A deficiency, trauma, or any condition in which the eyelids do not close completely.

A chronic infection of the CONJUNCTIVA and CORNEA caused by CHLAMYDIA TRACHOMATIS.

Transmission of gene defects or chromosomal aberrations/abnormalities which are expressed in extreme variation in the structure or function of the eye. These may be evident at birth, but may be manifested later with progression of the disorder.

Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.

Diseases affecting the eye.

Visual impairments limiting one or more of the basic functions of the eye: visual acuity, dark adaptation, color vision, or peripheral vision. These may result from EYE DISEASES; OPTIC NERVE DISEASES; VISUAL PATHWAY diseases; OCCIPITAL LOBE diseases; OCULAR MOTILITY DISORDERS; and other conditions (From Newell, Ophthalmology: Principles and Concepts, 7th ed, p132).

An ocular disease, occurring in many forms, having as its primary characteristics an unstable or a sustained increase in the intraocular pressure which the eye cannot withstand without damage to its structure or impairment of its function. The consequences of the increased pressure may be manifested in a variety of symptoms, depending upon type and severity, such as excavation of the optic disk, hardness of the eyeball, corneal anesthesia, reduced visual acuity, seeing of colored halos around lights, disturbed dark adaptation, visual field defects, and headaches. (Dictionary of Visual Science, 4th ed)

The removal of a cataractous CRYSTALLINE LENS from the eye.

Deviations from the average or standard indices of refraction of the eye through its dioptric or refractive apparatus.

A nutritional condition produced by a deficiency of VITAMIN A in the diet, characterized by NIGHT BLINDNESS and other ocular manifestations such as dryness of the conjunctiva and later of the cornea (XEROPHTHALMIA). Vitamin A deficiency is a very common problem worldwide, particularly in developing countries as a consequence of famine or shortages of vitamin A-rich foods. In the United States it is found among the urban poor, the elderly, alcoholics, and patients with malabsorption. (From Cecil Textbook of Medicine, 19th ed, p1179)

Damage or trauma inflicted to the eye by external means. The concept includes both surface injuries and intraocular injuries.

Recording of electric potentials in the retina after stimulation by light.

Degenerative changes in the RETINA usually of older adults which results in a loss of vision in the center of the visual field (the MACULA LUTEA) because of damage to the retina. It occurs in dry and wet forms.

Diseases of the cornea.

The total number of cases of a given disease in a specified population at a designated time. It is differentiated from INCIDENCE, which refers to the number of new cases in the population at a given time.

Defects of color vision are mainly hereditary traits but can be secondary to acquired or developmental abnormalities in the CONES (RETINA). Severity of hereditary defects of color vision depends on the degree of mutation of the ROD OPSINS genes (on X CHROMOSOME and CHROMOSOME 3) that code the photopigments for red, green and blue.

A species of parasitic nematodes widely distributed throughout central Africa and also found in northern South America, southern Mexico, and Guatemala. Its intermediate host and vector is the blackfly or buffalo gnat.

Atrophy of the optic disk which may be congenital or acquired. This condition indicates a deficiency in the number of nerve fibers which arise in the RETINA and converge to form the OPTIC DISK; OPTIC NERVE; OPTIC CHIASM; and optic tracts. GLAUCOMA; ISCHEMIA; inflammation, a chronic elevation of intracranial pressure, toxins, optic nerve compression, and inherited conditions (see OPTIC ATROPHIES, HEREDITARY) are relatively common causes of this condition.

The ten-layered nervous tissue membrane of the eye. It is continuous with the OPTIC NERVE and receives images of external objects and transmits visual impulses to the brain. Its outer surface is in contact with the CHOROID and the inner surface with the VITREOUS BODY. The outer-most layer is pigmented, whereas the inner nine layers are transparent.

A surgical specialty concerned with the structure and function of the eye and the medical and surgical treatment of its defects and diseases.

Disorder occurring in the central or peripheral area of the cornea. The usual degree of transparency becomes relatively opaque.

Disease of the RETINA as a complication of DIABETES MELLITUS. It is characterized by the progressive microvascular complications, such as ANEURYSM, interretinal EDEMA, and intraocular PATHOLOGIC NEOVASCULARIZATION.

A retrogressive pathological change in the retina, focal or generalized, caused by genetic defects, inflammation, trauma, vascular disease, or aging. Degeneration affecting predominantly the macula lutea of the retina is MACULAR DEGENERATION. (Newell, Ophthalmology: Principles and Concepts, 7th ed, p304)

Hereditary, progressive degeneration of the neuroepithelium of the retina characterized by night blindness and progressive contraction of the visual field.

Genetic diseases that are linked to gene mutations on the X CHROMOSOME in humans (X CHROMOSOME, HUMAN) or the X CHROMOSOME in other species. Included here are animal models of human X-linked diseases.

Infection with nematodes of the genus ONCHOCERCA. Characteristics include the presence of firm subcutaneous nodules filled with adult worms, PRURITUS, and ocular lesions.

Transient complete or partial monocular blindness due to retinal ischemia. This may be caused by emboli from the CAROTID ARTERY (usually in association with CAROTID STENOSIS) and other locations that enter the central RETINAL ARTERY. (From Adams et al., Principles of Neurology, 6th ed, p245)

Inflammation of the cornea.

The frequency of different ages or age groups in a given population. The distribution may refer to either how many or what proportion of the group. The population is usually patients with a specific disease but the concept is not restricted to humans and is not restricted to medicine.

Adjustment of the eyes under conditions of low light. The sensitivity of the eye to light is increased during dark adaptation.

Glaucoma in which the angle of the anterior chamber is open and the trabecular meshwork does not encroach on the base of the iris.

Absence of crystalline lens totally or partially from field of vision, from any cause except after cataract extraction. Aphakia is mainly congenital or as result of LENS DISLOCATION AND SUBLUXATION.

A rare degenerative inherited eye disease that appears at birth or in the first few months of life that results in a loss of vision. Not to be confused with LEBER HEREDITARY OPTIC NEUROPATHY, the disease is thought to be caused by abnormal development of PHOTORECEPTOR CELLS in the RETINA, or by the extremely premature degeneration of retinal cells.

A bilateral retinopathy occurring in premature infants treated with excessively high concentrations of oxygen, characterized by vascular dilatation, proliferation, and tortuosity, edema, and retinal detachment, with ultimate conversion of the retina into a fibrous mass that can be seen as a dense retrolental membrane. Usually growth of the eye is arrested and may result in microophthalmia, and blindness may occur. (Dorland, 27th ed)

A republic in western Africa, south of NIGER between BENIN and CAMEROON. Its capital is Abuja.

Photosensitive afferent neurons located in the peripheral retina, with their density increases radially away from the FOVEA CENTRALIS. Being much more sensitive to light than the RETINAL CONE CELLS, the rod cells are responsible for twilight vision (at scotopic intensities) as well as peripheral vision, but provide no color discrimination.

A disease of the eye in which the eyelashes abnormally turn inwards toward the eyeball producing constant irritation caused by motion of the lids.

The status of health in rural populations.

Education of the individual who markedly deviates intellectually, physically, socially, or emotionally from those considered to be normal, thus requiring special instruction.

The process in which light signals are transformed by the PHOTORECEPTOR CELLS into electrical signals which can then be transmitted to the brain.

Enzymes that catalyze the rearrangement of geometry about double bonds. EC 5.2.

Images used to comment on such things as contemporary events, social habits, or political trends; usually executed in a broad or abbreviated manner.

The number of males and females in a given population. The distribution may refer to how many men or women or what proportion of either in the group. The population is usually patients with a specific disease but the concept is not restricted to humans and is not restricted to medicine.

The teaching or training of those individuals with visual disability.

Specialized PHOTOTRANSDUCTION neurons in the vertebrates, such as the RETINAL ROD CELLS and the RETINAL CONE CELLS. Non-visual photoreceptor neurons have been reported in the deep brain, the PINEAL GLAND and organs of the circadian system.

The record of descent or ancestry, particularly of a particular condition or trait, indicating individual family members, their relationships, and their status with respect to the trait or condition.

Application of tests and examinations to identify visual defects or vision disorders occurring in specific populations, as in school children, the elderly, etc. It is differentiated from VISION TESTS, which are given to evaluate/measure individual visual performance not related to a specific population.

A refractive error in which rays of light entering the EYE parallel to the optic axis are brought to a focus in front of the RETINA when accommodation (ACCOMMODATION, OCULAR) is relaxed. This results from an overly curved CORNEA or from the eyeball being too long from front to back. It is also called nearsightedness.

Inflammation of part or all of the uvea, the middle (vascular) tunic of the eye, and commonly involving the other tunics (sclera and cornea, and the retina). (Dorland, 27th ed)

A pair of ophthalmic lenses in a frame or mounting which is supported by the nose and ears. The purpose is to aid or improve vision. It does not include goggles or nonprescription sun glasses for which EYE PROTECTIVE DEVICES is available.

A purplish-red, light-sensitive pigment found in RETINAL ROD CELLS of most vertebrates. It is a complex consisting of a molecule of ROD OPSIN and a molecule of 11-cis retinal (RETINALDEHYDE). Rhodopsin exhibits peak absorption wavelength at about 500 nm.

A sultanate on the southeast coast of the Arabian peninsula. Its capital is Masqat. Before the 16th century it was ruled by independent emirs but was captured and controlled by the Portuguese 1508-1648. In 1741 it was recovered by a descendent of Yemen's imam. After its decline in the 19th century, it became virtually a political and economic dependency within the British Government of India, retaining close ties with Great Britain by treaty from 1939 to 1970 when it achieved autonomy. The name was recorded by Pliny in the 1st century A.D. as Omana, said to be derived from the founder of the state, Oman ben Ibrahim al-Khalil. (From Webster's New Geographical Dictionary, 1988, p890; Oman Embassy, Washington; Room, Brewer's Dictionary of Names, 1992, p391)

The concave interior of the eye, consisting of the retina, the choroid, the sclera, the optic disk, and blood vessels, seen by means of the ophthalmoscope. (Cline et al., Dictionary of Visual Science, 4th ed)

Retinol and derivatives of retinol that play an essential role in metabolic functioning of the retina, the growth of and differentiation of epithelial tissue, the growth of bone, reproduction, and the immune response. Dietary vitamin A is derived from a variety of CAROTENOIDS found in plants. It is enriched in the liver, egg yolks, and the fat component of dairy products.

Devices that help people with impaired sensory responses.

An archipelago in Polynesia in the southwest Pacific Ocean, comprising about 150 islands. It is a kingdom whose capital is Nukualofa. It was discovered by the Dutch in 1616, visited by Tasman in 1643, and by Captain Cook in 1773 and 1777. The modern kingdom was established during the reign of King George Tupou I, 1845-93. It became a British protectorate in 1900 and gained independence in 1970. The name Tonga may be of local origin, meaning either island or holy. Its other name, Friendly Islands, was given by Captain Cook from the welcome given him by the natives. (From Webster's New Geographical Dictionary, 1988, p1219 & Room, Brewer's Dictionary of Names, 1992, p549)

A series of tests used to assess various functions of the eyes.

A genus of parasitic nematodes whose organisms live and breed in skin and subcutaneous tissues. Onchocercal microfilariae may also be found in the urine, blood, or sputum.

The concept pertaining to the health status of inhabitants of the world.

A systematic collection of factual data pertaining to health and disease in a human population within a given geographic area.

The ability to respond to segments of the perceptual experience rather than to the whole.

A country in northeastern Africa. The capital is Khartoum.

Type of vision test used to determine COLOR VISION DEFECTS.

Residual vision in the blind field of hemidecorticated humans predicted by a diffusion scatter model and selective spectral absorption of the human eye. (1/57)

The notion of blindsight was recently challenged by evidence that patients with occipital damage and contralateral field defects show residual islands of vision which may be associated with spared neural tissue. However, this possibility could not explain why patients who underwent the resection or disconnection of an entire cerebral hemisphere exhibit some forms of blindsight. We present here a model for the detection of intraocular scatter, which can account for human sensitivity values obtained in the blind field of hemidecorticated patients. The model demonstrates that, under controlled experimental conditions i.e. where the extraocular scatter is eliminated, Lambertian intraocular scatter alone can account for the visual sensitivities reported in these patients. The model also shows that it is possible to obtain a sensitivity in the blind field almost equivalent to that in the good field using the appropriate parameters. Finally, we show with in-vivo spectroreflectometry measurements made in the eyes of our hemidecorticated patients, that the relative drop in middle wavelength sensitivity generally obtained in the blind field of these patients can be explained by selective intraocular spectral absorption. (+info)

Cortical blindness and seizures in a patient receiving FK506 after bone marrow transplantation. (2/57)

A 54-year-old woman with a myelodysplastic syndrome treated with high-dose chemotherapy and an allogenic bone marrow transplant developed acute cortical blindness while receiving tacrolimus (FK506). MRI showed white matter abnormalities. After discontinuation of FK506, the patient's vision returned within 8 days. FK506 neurotoxicity is similar to cyclosporine neurotoxicity and can occur in allogenic bone marrow transplant patients treated with FK506. (+info)

Chronic cortical visual impairment in children: aetiology, prognosis, and associated neurological deficits. (3/57)

BACKGROUND/AIMS: To evaluate prevalence, aetiology, prognosis, and associated neurological and ophthalmological problems in children with cortical visual impairment (CVI). METHODS: The records of 7200 outpatients seen in the paediatric ophthalmology practice over the past 15 years were reviewed in order to compile data concerning CVI. In addition, the authors devised and applied a system for grading visual recovery in order to assess prognosis. RESULTS: CVI occurred in 2.4% of all patients examined. The four most common causes of CVI were perinatal hypoxia (22%), cerebral vascular accident (14%), meningitis (12%), and acquired hypoxia (10%). Most children with CVI had associated neurological abnormalities. The most common were seizures (53%), cerebral palsy (26%) hemiparesis (12%), and hypotonia (5%). Associated ophthalmological problems were esotropia (19%), exotropia (18%), optic nerve atrophy (16%), ocular motor apraxia (15%), nystagmus (11%), and retinal disease (3%). On average, CVI patients improved by two levels as measured by the authors' scale. CONCLUSION: The majority of children with CVI showed at least some recovery. In this group of children, CVI is often accompanied by additional ophthalmological problems and is nearly always associated with other, serious neurological abnormalities. (+info)

Visual perception of motion, luminance and colour in a human hemianope. (4/57)

Human patients rendered cortically blind by lesions to V1 can nevertheless discriminate between visual stimuli presented to their blind fields. Experimental evidence suggests that two response modes are involved. Patients are either unaware or aware of the visual stimuli, which they are able to discriminate. However, under both conditions patients insist that they do not see. We investigate the fundamental difference between percepts derived for the normal and affected hemifield in a human hemianope with visual stimuli of which he was aware. The psychophysical experiments we employed required the patient, GY, to make comparisons between stimuli presented in his affected and normal hemifields. The subject discriminated between, and was allowed to match, the stimuli. Our study reveals that the stimulus parameters of colour and motion can be discriminated and matched between the normal and blind hemifields, whereas brightness cannot. We provide evidence for associations between the percepts of colour and motion, but a dissociation between the percepts of brightness, derived from the normal and hemianopic fields. Our results are consistent with the proposal that the perception of different stimulus attributes is expressed in activity of functionally segregated visual areas of the brain. We also believe our results explain the patient's insistence that he does not see stimuli, but can discriminate between them with awareness. (+info)

The oculomotor distractor effect in normal and hemianopic vision. (5/57)

The present study investigated the inhibitory effect of visual distractors on the latency of saccades made by hemianopic and normal human subjects. The latency of saccades made by hemianopic subjects to stimuli in their intact visual field was not affected by visual distractors presented within their hemianopic field. In contrast, the latency of saccades made by normal subjects was increased significantly under distractor conditions. The latency increase was larger for temporal than nasal distractors. The results are inconsistent with previous proposals that the crossed retinotectal pathway from the nasal hemiretina to the superior colliculus may mediate a blindsight inhibitory effect when distractors appear within a hemianopic temporal visual field. Instead, the distractor effect appears to reflect the normal processes involved in saccade target selection which may be mediated by a circuit involving both cortical and subcortical structures. (+info)

Intact verbal description of letters with diminished awareness of their forms. (6/57)

Visual processing and its conscious awareness can be dissociated. To examine the extent of dissociation between ability to read characters or words and to be consciously aware of their forms, reading ability and conscious awareness for characters were examined using a tachistoscope in an alexic patient. A right handed woman with 14 years of education presented with incomplete right hemianopia, alexia with kanji (ideogram) agraphia, anomia, and amnesia. Brain MRI disclosed cerebral infarction limited to the left lower bank of the calcarine fissure, lingual and parahippocampal gyri, and an old infarction in the right medial frontal lobe. Tachistoscopic examination disclosed that she could read characters aloud in the right lower hemifield when she was not clearly aware of their forms and only noted their presence vaguely. Although her performance in reading kanji was better in the left than the right field, she could read kana (phonogram) characters and Arabic numerals equally well in both fields. By contrast, she claimed that she saw only a flash of light in 61% of trials and noticed vague forms of stimuli in 36% of trials. She never recognised a form of a letter in the right lower field precisely. She performed judgment tasks better in the left than right lower hemifield where she had to judge whether two kana characters were the same or different. Although dissociation between performance of visual recognition tasks and conscious awareness of the visual experience was found in patients with blindsight or residual vision, reading (verbal identification) of characters without clear awareness of their forms has not been reported in clinical cases. Diminished awareness of forms in our patient may reflect incomplete input to the extrastriate cortex. (+info)

Cerebral infarction complicating intravenous immunoglobulin therapy in a patient with Miller Fisher syndrome. (7/57)

Intravenous immunoglobulin (IVIg) therapy is being increasingly used in a wide range of neurological conditions. However, treatment is expensive and side effects may be severe. A patient with Miller Fisher syndrome who developed cortical blindness as a consequence of occipital infarction precipitated by IVIg is reported on. (+info)

Cortical blindness: an unusual sequela of snake bite. (8/57)

Several ophthalmic effects may follow snake bite; this report describes an instance of cortical blindness that resulted from snake bite. (+info)

Visual deficits, such as agnosia, prosopagnosia or cortical blindness (with bilateral infarcts) may be a product of ischemic ... Peripheral Territory Lesions Contralateral homonymous hemianopsia cortical blindness with bilateral involvement of the ... Stroke syndromes: Cortical blindness. [Internet]. [updated 1999 July; cited 2011 May 13]. Retrieved from http://www. ...

https://en.wikipedia.org/wiki/Posterior_cerebral_artery_syndrome

Heywood, C.A.; Kentridge, R.W.; Cowey, A. (September 1998). "Cortical Color Blindness is Not "Blindsight for Color"". ... Color blindness (or color vision deficiency) is a defect of normal color vision. Because color blindness is a symptom of ... color blindness causes difficulty in all four kinds of color tasks. However, cerebral color blindness may cause issues only in ... Sometimes, color blindness derived from brain damage (e.g. cerebral achromatopsia can affect the other color tasks while ...

https://en.wikipedia.org/wiki/Color_task

Symptoms of cortical blindness vary greatly across individuals and may be more severe in periods of exhaustion or stress. It is ... Blindness-presenting visual acuity worse than 1/60 with light perception Category 5: Blindness-irreversible blindness with no ... Cortical blindness results from injuries to the occipital lobe of the brain that prevent the brain from correctly receiving or ... Blindness at Curlie Chisholm, Hugh, ed. (1911). "Blindness" . Encyclopædia Britannica (11th ed.). Cambridge University Press. ...

https://en.wikipedia.org/wiki/Visual_impairment

... cortical blindness, awareness or denial of blindness; tactile naming, achromatopia (color blindness), failure to see to-and-fro ... The cortical branches are: Anterior temporal, distributed to the uncus and the anterior part of the fusiform gyrus Posterior ... The branches of the posterior cerebral artery are divided into two sets, ganglionic and cortical: Also known as the perforating ...

https://en.wikipedia.org/wiki/Posterior_cerebral_artery

Recovery from blindness See for example: Uri Polat (2008). "Restoration of underdeveloped cortical functions: Evidence from ...

https://en.wikipedia.org/wiki/Stereopsis_recovery

Bilateral lesions of the occipital lobe can lead to cortical blindness (see Anton's syndrome). The two occipital lobes are the ... Damage to the primary visual areas of the occipital lobe can cause partial or complete blindness. The occipital lobe is divided ... Functional neuroimaging reveals similar patterns of response in cortical tissue of the lobes when the retinal fields are ... can cause blindness due to the holes in the visual map on the surface of the visual cortex that resulted from the lesions. ...

https://en.wikipedia.org/wiki/Occipital_lobe

Alterations in vision (vision blurring, hemivisual field defects, color blindness, cortical blindness) are common. They occur ... Brain ventricles are compressed, cortical gyri flattened.[citation needed] Diagnostic methods for hypertensive encephalopathy ...

https://en.wikipedia.org/wiki/Hypertensive_encephalopathy

Other cerebral signs that may precede the convulsion include nausea, vomiting, headaches, and cortical blindness. If the ... or cortical blindness, which affects the vision from both eyes. There are also potential complications in the lungs. The woman ... OCLC 727346377.{{cite book}}: CS1 maint: others (link) Cunningham FG, Fernandez CO, Hernandez C (April 1995). "Blindness ... one-sided blindness (either temporary due to amaurosis fugax or potentially permanent due to retinal detachment), ...

https://en.wikipedia.org/wiki/Eclampsia

"Blunt cervical spine trauma as a cause of spinal cord injury and delayed cortical blindness". Spinal Cord. 45 (10): 687-689. ...

https://en.wikipedia.org/wiki/Cervical_spine_disorder

... or cortical blindness, results from much larger lesions in the occipital cortex. Cortical blindness appears as a complete loss ... Throughout his research he discovered that cortical lesions in the visual areas lead to blindness. He called blindness ... The dogs normally recovered from psychic blindness in 4 to 6 weeks and did appear to relearn faster than they first learned ... While suffering from psychic blindness, dogs were able to navigate effectively but showed no sign that they recognized what the ...

https://en.wikipedia.org/wiki/Hermann_Munk

It is not uncommon for the erroneous diagnoses of malingering or cortical blindness to be made. If possible, an urgent neuro- ... To prevent impending blindness, it is urgent to rule out giant cell arteritis when a patient over 50 presents with sudden ... Restricted blood flow can lead to permanent damage to the optic nerve and result in blindness (often in both eyes). For ... Pazos GA, Leonard DW, Blice J, Thompson DH (1999). "Blindness after bilateral neck dissection: case report and review". ...

https://en.wikipedia.org/wiki/Posterior_ischemic_optic_neuropathy

Achromatopsia Cortical blindness Color blindness Ishihara color test Jaeger W, Krastel H, Braun S (December 1988). "[Cerebral ... A case of cerebral achromatopsia, acquired after a cortical lesion, was described by Dr. Verrey in 1888. but the evidence was ... Cerebral achromatopsia is a type of color-blindness caused by damage to the cerebral cortex of the brain, rather than ... It is a consequence of cortical damage that arises through ischemia or infarction of a specific area in the ventral ...

https://en.wikipedia.org/wiki/Cerebral_achromatopsia

Saigal G, Bhatia R, Bhatia S, Wakhloo AK (February 2004). "MR findings of cortical blindness following cerebral angiography: is ... of the cases experience cortical blindness from 3 minutes to 12 hours after the procedure. It is a condition where those ...

https://en.wikipedia.org/wiki/Cerebral_angiography

... and cortical blindness. It is caused by recessive mutations in D2HGDH (type I) or by dominant gain-of-function mutations in ...

https://en.wikipedia.org/wiki/2-Hydroxyglutaric_aciduria

"A 3.1-Mb microdeletion of 3p21.31 associated with cortical blindness, cleft lip, CNS abnormalities, and developmental delay". ...

https://en.wikipedia.org/wiki/C3orf62

Cortical blindness refers to any partial or complete visual deficit that is caused by damage to the visual cortex in the ... Bilateral lesions can cause complete cortical blindness and can sometimes be accompanied by a condition called Anton-Babinski ... and hyperammonemia can cause cortical blindness. Occipital cortex lesions tend to cause homonymous hemianopias of variable size ... Lesions involving the whole optic nerve cause complete blindness on the affected side, that means damage at the right optic ...

https://en.wikipedia.org/wiki/Visual_pathway_lesions

... normal outcome in a patient with late diagnosis after prolonged status epilepticus causing cortical blindness". Neuropediatrics ...

https://en.wikipedia.org/wiki/ALDH7A1

1899, S. 86 - On the self-perception of focal lesions in patients with cortical blindness and cortical deafness. Über den ...

https://en.wikipedia.org/wiki/Gabriel_Anton

This cut off oxygen to her brain, resulting in a brain stem contusion, cervical cord injury, and cortical blindness. She was ...

https://en.wikipedia.org/wiki/Aruna_Shanbaug_case

... and/or cortical visual impairment). In rare cases, decreased visual acuity(blindness) can occur. dental enamel hypoplasia/ ... Severe cortical involvement is uncommon. SBE is a chronic state of mild bilirubin-induced neurological dysfunction (BIND). ...

https://en.wikipedia.org/wiki/Kernicterus

Yusof utilized the metaphor of Anton-Babinski syndrome (cortical blindness), emptying the city of Kuala Lumpur of people ...

https://en.wikipedia.org/wiki/Desolasi

... and autobiographical amnesia following recovery from cortical blindness: case M.H.". Neuropsychologia. 31 (6): 571-589. doi: ...

https://en.wikipedia.org/wiki/Jenni_Ogden

Cortical area Cortical blindness Feature integration theory List of regions in the human brain Retinotopy Visual processing ... MT is connected to a wide array of cortical and subcortical brain areas. Its input comes from visual cortical areas V1, V2 and ... the influence of higher-tier cortical areas on lower-tier cortical areas) and lateral connections from pyramidal neurons (Hupe ... In mammals, it is located in the posterior pole of the occipital lobe and is the simplest, earliest cortical visual area. It is ...

https://en.wikipedia.org/wiki/Visual_cortex

Dandolo had cortical blindness as a result of a severe blow to the back of the head received sometime between 1174 and 1176. ... This piece of primary evidence seems to support Madden's theory that Dandolo's blindness was cortical, since his eyes appeared ... Dandolo's blindness appears to have been total. Geoffrey de Villehardouin, whom Dandolo accompanied on the Fourth Crusade, ...

https://en.wikipedia.org/wiki/Enrico_Dandolo

He would later be diagnosed to be suffering from epilepsy and cortical blindness, though the apparent life-threatening event ...

https://en.wikipedia.org/wiki/Kathleen_Folbigg

Anton syndrome, occasionally known as Anton-Babinski syndrome, is a form of cortical blindness in which the individual denies ... This term includes color blindness. Achromatopsia is a condition characterized by a partial or total absence of color vision. ... Achromatopsia is different from the more common forms of color vision deficiency (also called color blindness), in which people ...

https://en.wikipedia.org/wiki/Glossary_of_psychiatry

... in which there is full cortical blindness along with the confabulation of visual experience. Much of our current understanding ... The area of blindness - known as a scotoma - is in the visual field opposite the damaged hemisphere and can vary from a small ... GY's striate cortical region was damaged through trauma at the age of eight, though for the most part he retained full ... of the primary visual cortex leads to blindness in the part of the visual field that corresponds to the damaged cortical ...

https://en.wikipedia.org/wiki/Blindsight

... cortical blindness and stroke. Intramuscular injections should not be administered to those with idiopathic thrombocytopenic ... Trabecular bone loss in the lumbar spine precedes cortical bone loss in the femoral neck. Allergic: allergic or ...

https://en.wikipedia.org/wiki/Methylprednisolone

Due to cerebral tumors, cortical malformation, mesial temporal sclerosis. Therapy. Drug therapy (57% amenable) where not ... Optic nerve gliomas and associated blindness. Astrocytoma Another CNS manifestation of NF-1 is the so-called "unidentified ... conditions may be observed in early infancy Small tumors may arise in the retina which can eventually lead to blindness. Also, ...

https://en.wikipedia.org/wiki/Neurofibromatosis_type_I

Cattle, sheep, goat, and other ruminants that are diagnosed with PEM or pre-PEM suffer opisthotonus, cortical blindness, ... Cortical laminar necrosis "Overview of Polioencephalomalacia - Nervous System". Merck Veterinary Manual. Retrieved 2019-12-02 ... central blindness, anorexia, muscle tremors, teeth grinding, trismus, salivation, drooling, convulsions, nystagmus, clonic ...

https://en.wikipedia.org/wiki/Polioencephalomalacia

The limbic cortical regions process individual emotion factors.[18] In A General Theory of Love, three professors of psychiatry ...

https://en.wikipedia.org/wiki/Biological_basis_of_love

... patients may display cortical blindness (which, rarely, can involve blindness that the patient denies having, as seen in ... Further, it indicates that cortical damage rostral to, and including, lateral geniculate nucleus is an unlikely outcome of the ...

https://en.wikipedia.org/wiki/Macula

Local inhibitory networks are supposed to confine cortical firing to a specific region, but it leads to a spread of cortical ... Color blindness was a common condition known as chromatodysopsia and, since Cornaz saw chromesthesia as the opposite, he named ... Disinhibited feedback could account for the fact that chromesthesia can be acquired by damage to the retino-cortical pathway [5 ...

https://en.wikipedia.org/wiki/Chromesthesia

Magnetoencephalography. MEG measures magnetic fields resulting from cortical activity. It is similar to EEG, except that it has ... and studies of inattentional blindness (Mack and Rock, 1998). In the dichotic listening task, subjects are bombarded with two ... cortical areas in the brain is coordinated and bound together to give rise to coherent perceptual and symbolic representations ...

https://en.wikipedia.org/wiki/Cognitive_sciences

Ischemia within the arteries branching from the internal carotid artery may result in symptoms such as blindness in one eye, ... "Spreading depression and focal brain ischemia induce cyclooxygenase-2 in cortical neurons through N-methyl-D-aspartic acid- ... Symptoms of brain ischemia can include unconsciousness, blindness, problems with coordination, and weakness in the body. Other ...

https://en.wikipedia.org/wiki/Brain_ischemia

In equine ovaries, unlike in humans, the vascular tissue is cortical to follicular tissue, so ovulation can only occur at an ... Horses have two-color, or dichromatic vision, which is somewhat like red-green color blindness in humans. Because the horse's ...

https://en.wikipedia.org/wiki/Equine_anatomy

... syndrome Cortical blindness mental retardation polydactyly Cortical degeneration of the cerebellum parenchymatous Cortical ... familial nonpolyposis Colonic atresia Colonic malakoplakia Color blindness Colorado tick fever Colver-Steer-Godman syndrome ... dysplasia Cortical hyperostosis syndactyly Corticobasal degeneration Costello syndrome Costochondritis (otherwise Costal ...

https://en.wikipedia.org/wiki/List_of_diseases_(C)

When he was temporarily blinded by an assassin's blindness-inducing weapon, Darien was not only able to limit the damage by ... leading to a breakdown of higher cortical function, initially causing a lack of inhibition. The eyes become bloodshot and short ...

https://en.wikipedia.org/wiki/The_Invisible_Man_(2000_TV_series)

The cortical mechanism was found to work in combination with the retinal mechanism to contribute to metamorphopsia in long- ... Visual disturbances and blindness). ... The cortical mechanism, which was discovered after the retinal ... cortical mechanism). The retinal mechanism involves the displacement of retinal layers which results in the mislocation of ...

https://en.wikipedia.org/wiki/Metamorphopsia

After collection, the cortical neurons were cultured in a petri dish and rapidly began to reconnect themselves to form a living ... In vision science, direct brain implants have been used to treat non-congenital (acquired) blindness. One of the first ... Due to the cortical plasticity of the brain, signals from implanted prostheses can, after adaptation, be handled by the brain ... However, the slow cortical potential approach to BCIs has not been used in several years, since other approaches require little ...

https://en.wikipedia.org/wiki/Brain–computer_interface

After further examination, it was discovered that ELM had a Cortical Lesion in his left hemisphere in the temporal lobe. ELM ... Following Hermann Munk's identification of a condition he called "Seelenblindheit" (mind-blindness) Heinrich Lissauer published ... Apperceptive agnosia results from diffuse cortical pathology of AD. There is early involvement in the hippocampus and the ... Visual disturbances and blindness, Visual system, Visual perception). ...

https://en.wikipedia.org/wiki/Apperceptive_agnosia

"Is Congenital Blindness A Safeguard For Schizophrenia?". TruthTheory. 2020-02-20. Retrieved 2020-02-27. "Why Early Blindness ... 17 March 2009). "Impaired maturation of dendritic spines without disorganization of cortical cell layers in mice lacking NRG1/ ...

https://en.wikipedia.org/wiki/Risk_factors_of_schizophrenia

In developing countries, women are less likely to get timely treatments for conditions that lead to blindness such as cataracts ... Harasty, J.; Double, K.L.; Halliday, G.M.; Kril, J.J.; McRitchie, D.A. (February 1997). "Language-associated cortical regions ... Females have less asymmetry than males between left and right hemispheric cortical thickness. Males have a larger intra- ... X-linked recessive disorders include: Red-green colour blindness Haemophilia A (factor VIII) Haemophilia B (factor IX) Duchenne ...

https://en.wikipedia.org/wiki/Sex_differences_in_human_physiology

Studies using event-related potentials (ERPs) have quantified the extent that mind-wandering reduces the cortical processing of ... A neuronal model for inattentional blindness". PLOS Biology. 3 (5): e141. doi:10.1371/journal.pbio.0030141. PMC 1074751. PMID ... mind wandering reduces cortical analysis of the task environment". Journal of Cognitive Neuroscience. 20 (3): 458-469. doi: ...

https://en.wikipedia.org/wiki/Mind-wandering

Their sharpness of vision (visual acuity) slowly worsens, often leading to legal blindness in mid-adulthood. This condition is ... but they progress usually to severe deafness and dystonia and sometimes are accompanied by cortical deterioration of vision and ... The combination of deafness and blindness severely affects communication, while the ongoing movement disorder results in an ... and leading to more severe blindness by age 30 or 40. The first symptom of DDON syndrome is hearing loss caused by nerve damage ...

https://en.wikipedia.org/wiki/Mohr–Tranebjærg_syndrome

Ever since scientists observed cortical remapping in the brain of Taub's Silver Spring monkeys, there has been a large amount ... Glaucoma - loss of retinal ganglion cells which causes some loss of vision to blindness. Diabetic retinopathy - poor blood ...

https://en.wikipedia.org/wiki/Sensory_neuron

The most iconic and striking cortical abnormality has been called "cortical ribboning" or "cortical ribbon sign" due to ... Later symptoms include dementia, involuntary movements, blindness, weakness, and coma. About 70% of people die within a year of ... Diffuse cortical vacuolization occurs in Alzheimer's disease, and superficial cortical vacuolization occurs in ischemia and ... In about 24% of cases DWI shows only cortical hyperintensity; in 68%, cortical and subcortical abnormalities; and in 5%, only ...

https://en.wikipedia.org/wiki/Creutzfeldt–Jakob_disease

Downing, P., Jiang, Y., Shuman, M., Kanwisher, N. (2001) A cortical area selective for visual processing of the human body. ... Journal of Neuroscience, Vol 11, 641-649 Pearlman AL, Birch J, Meadows JC (1979) Cerebral color blindness: an acquired defect ... An issue for the modular theory of cognitive neuroscience is that there are cortical anatomical differences from person to ... In fact, the proposed distributive scheme of the functional cortical gradientes by J. Gonzalo already tries to join both ...

https://en.wikipedia.org/wiki/Functional_specialization_(brain)

Studies of people whose sight has been restored after a long blindness (whether from birth or a later point in life) reveal ... Rats that were exposed to pulsed noise during the critical period had cortical neurons that were less able to respond to ... In their study, rats were exposed to pulsed noise during the critical period and the effect on cortical processing was measured ... Härtig W, Derouiche A, Welt K, Brauer K, Grosche J, Mäder M, Reichenbach A, Brückner G (September 1999). "Cortical neurons ...

https://en.wikipedia.org/wiki/Critical_period

CABP4 Night blindness, congenital stationary, type IC; 613216; TRPM1 Night blindness, congenital stationary, X-linked, type 2A ... KLKB1 Focal cortical dysplasia, Taylor balloon cell type; 607341; TSC1 Focal dermal hypoplasia; 305600; PORCN Folate ... CSNB1 Night blindness, congenital stationary, type 1B; 257270; GRM6 Night blindness, congenital stationary, type 2B; 610427; ... PDE6B Night blindness, congenital stationary, autosomal dominant 3; 610444; GNAT1 Night blindness, congenital stationary, type ...

https://en.wikipedia.org/wiki/List_of_OMIM_disorder_codes

... are one of the most common treatable causes of visual impairment and blindness during infancy, with an ... Any central opacity or surrounding cortical distortion greater than 3 mm can be assumed to be visually significant. Laboratory ... Articles with short description, Short description is different from Wikidata, Eye, Vision, Ophthalmology, Blindness, Disorders ...

https://en.wikipedia.org/wiki/Congenital_cataract

Body areas differ both in tactile receptor density and somatosensory cortical representation. Normally, a person should be able ... Wong, Michael; Gnanakumaran, Vishi; Goldreich, Daniel (2011-05-11). "Tactile Spatial Acuity Enhancement in Blindness: Evidence ... and blindness, and to track the changes in tactile spatial acuity that occur during perceptual learning and recovery from nerve ...

https://en.wikipedia.org/wiki/Two-point_discrimination

Early research on prosopagnosia, or "face blindness", found that damage to the occipito-temporal region led to an impaired or ... Mattavelli, G.; Rosanova, M.; Casali, A. G.; Papagno, C.; Romero Lauro L. J. (2013). "Top-down interference and cortical ...

https://en.wikipedia.org/wiki/N170

https://en.wikipedia.org/wiki/Macula_of_retina

JavaScript is disabled for your browser. Some features of this site may not work without it ...

https://extranet.who.int/iris/restricted/browse?authority=Blindness%2C+Cortical&type=mesh

Cortical blindness and cortical visual impairment (CVI), which refers to the partial loss of vision caused by cortical damage, ... Cortical blindness can be acquired or congenital, and may also be transient in certain instances. Acquired cortical blindness ... Fundoscopy should be normal in cases of cortical blindness. Cortical blindness can be associated with visual hallucinations, ... The development of cortical blindness into the milder cortical visual impairment is a more likely outcome. Furthermore, some ...

https://en.wikipedia.org/wiki/Cortical_blindness

Cortical blindness after cardiac catheterization: effect of re-challenge with dye. Cathet Cardiovasc Diagn 1993;28:149-151. ... Cortical Blindness after Contrast-Enhanced CT: Complication in a Patient with Diabetes Insipidus. Hans-Joachim Mentzel, Jörg ... Cortical blindness after coronary angiography: a rare but reversible complication. Cathet Cardiovasc Diagn 1991;22:177-179. ... Transient cortical blindness related to coronary angiography and graft study. Med J Aust 2002;177:43-44. ...

http://www.ajnr.org/content/24/6/1114?ijkey=b866a7793b2ab2230f8d3203b5208fda2d59bcf1&keytype2=tf_ipsecsha

Cortical Blindness after Correction of Symptomatic Hyponatremia: Dynamic Cerebral Dysfunction Visualized Using Serial SPECT ... Cortical Blindness after Correction of Symptomatic Hyponatremia: Dynamic Cerebral Dysfunction Visualized Using Serial SPECT ... Cortical Blindness after Correction of Symptomatic Hyponatremia: Dynamic Cerebral Dysfunction Visualized Using Serial SPECT ... Cortical Blindness after Correction of Symptomatic Hyponatremia: Dynamic Cerebral Dysfunction Visualized Using Serial SPECT ...

https://jnm.snmjournals.org/content/36/7/1272

Cortical blindness as severe neuro-ophthalmological manifestation of tuberous sclerosis complex Case Report ... We present a case of a 1-year-old Hispanic girl with TSC in which bilateral cortical blindness is documented. ... and cortical blindness. At 1-year follow-up visit, the mother reported persistence of seizures despite medical treatment. The ... and marked central nervous system and visual pathway impairment leading to cortical blindness in our patient. The follow-up is ...

https://www.egms.de/static/en/journals/oc/2017-7/oc000062.shtml

Cortical blindness is a condition in which the eyes are structurally normal and the pupillary reflexes are maintained, however ... Reversible Cortical Blindness: Posterior Reversible Encephalopathy Syndrome. J Indian Med Assoc. 2010;108(11):778-80. - Pubmed ... 2. Sesar A, Cavar I, Sesar A, Sesar I. Transient Cortical Blindness in Posterior Reversible Encephalopathy Syndrome After ... Posterior reversible encephalopathy syndrome with transient cortical blindness. Case contributed by Mohamed Saber ◉ ...

https://radiopaedia.org/cases/posterior-reversible-encephalopathy-syndrome-with-transient-cortical-blindness?lang=us

Cortical blindness is a rare but frightening complication following coronary angiogram probably due to contrast penetration in ... A quick literature search showed case reports of cortical blindness linked with coronary angiography and such blindness almost ... Cortical blindness post coronary angiogram-A rare but frightening complication. 13th European Cardiology Conference. December ... Cortical blindness is a rare but frightening complication following coronary angiogram probably due to contrast penetration in ...

https://www.longdom.org/proceedings/cortical-blindness-post-coronary-angiograma-rare-but-frightening-complication-54638.html

Two long-surviving cases of cortical blindness are described, one total and the other total except for detection of sudden ... Observations on cortical blindness and on vascular lesions that cause loss of recent memory ... Observations on cortical blindness and on vascular lesions that cause loss of recent memory ...

https://jnnp.bmj.com/content/38/5/459

Thus, bacterial meningitis may lead to widespread cortical destruction, particularly when left untreated. ... AIDS patients with cryptococcal meningitis have increased risk of blindness and death unless kept below 300 mm H2O ...

https://www.medscape.com/answers/232915-10731/which-adenovirus-serotypes-are-etiologic-agents-of-meningoencephalitis

... tagged posts. 7 Psychology of Saul/St. Paul - A Study of Linguistics, Translation, Interpretation and ...

https://www.arthuride.com/tag/cortical-blindness/

Blindness [‎14]‎. Blindness, Cortical [‎4]‎. Budgets [‎137]‎. Capital Financing [‎18]‎. Child Welfare [‎23]‎. ...

https://apps.who.int/iris/handle/10665/105516/browse?type=mesh

In simpler terms, Cortical blindness is the complete or partial loss of vision in an eye that has been damaged due to loss or ... Know the types, causes, symptoms, treatment, prevention and diagnosis of cortical blindness. ... Cortical blindness is the loss of vision because of bilateral lesions of a section of the brain called geniculocalcarine ... Types of Cortical Blindness. Cortical Blindness can either be in the form of acquired or congenital or it could be transient. ...

https://www.epainassist.com/eye-pain/cortical-blindness

... cortical blindness, brain atrophy. 1993. Michigan. 9 mo. Male. Unknown. Unknown. Serologic. Neurologic deficits, cortical ... Neurologic deficits, cortical blindness, seizures. 2004‡. Louisiana. 4 y. Male. 1,920 (12). 954 (55). Serologic. Full recovery ... Neurologic deficits, blindness, seizures, brain atrophy. 1996. Illinois. 6 y. Male. 605 (5). 2 (,1). Serologic. Neurologic ... Neurologic deficits, blindness, generalized spasticity. 2000. California. 17 y. Male. 2,385 (15). 7 (37). Brain biopsy, ...

https://wwwnc.cdc.gov/eid/article/13/6/06-1541-t1

Posts about cortical blindness therapy written by Therapeutic Exerciser ... Tag: cortical blindness therapy. June 5, 2018. Therapeutic Exerciser Carla: Has no eyes, but enjoys jumping!. April 24, 2018. ...

https://therapeuticexerciser.com/tag/cortical-blindness-therapy/

New findings included slurred speech, diminished deep tendon reflexes, ophthalmoplegia, and evidence of cortical blindness ... Within 24 hours after thiamine supplementation, the ophthalmoplegia and cortical blindness improved substantially. During the ...

https://www.cdc.gov/mmwr/preview/mmwrhtml/00047949.htm

... and blindness can have many causes. If you lose vision, you cant get it back. But there are ways to manage; learn how. ... Cortical Visual Impairment (American Association for Pediatric Ophthalmology and Strabismus) * Delayed Visual Maturation ( ... ClinicalTrials.gov: Blindness (National Institutes of Health) * ClinicalTrials.gov: Vision Disorders (National Institutes of ... 10 Tips to Reduce Your Chance of Losing Vision from the Most Common Cause of Blindness (American Academy of Ophthalmology) ...

https://medlineplus.gov/visionimpairmentandblindness.html

Optic nerve involvement (may lead to blindness) Seizure symptoms include the following:. * Seizures are most common during ...

https://reference.medscape.com/article/957604-overview

Blindness, Cortical / epidemiology * Blindness, Cortical / etiology * Brain Edema / epidemiology * Brain Edema / etiology ...

https://pubmed.ncbi.nlm.nih.gov/20567139/?dopt=Abstract

Her eyes were not damaged in the accident; instead, doctors attributed her loss of vision to brain damage: cortical blindness. ... Her blindness is "psychogenic" but also very real.. Are there any more prosaic explanations? My first thought on reading this ... The authors say that B. T.s blindness must have a "psychogenic" origin, because of how quickly it comes and goes. No known ... The paper is called Sight and blindness in the same person: gating in the visual system, authored by German psychologists Hans ...

https://www.discovermagazine.com/mind/multiple-personalities-blindness-and-the-brain

Cross References Agnosia; Alexia; Cortical blindness; Optic aphasia; Prosopagnosia; Riddochs phenomenon; Simultanagnosia; ...

http://bioinformatics.org/seqlink/forum/viewtopic.php?p=243443

Renier, L., De Volder, A. G., & Rauschecker, J. P. (2014). Cortical plasticity and preserved function in early blindness. ... Echolocation and Blindness. The literature to date suggests that blind people are more sensitive to acoustic reverberations ... Journal of Visual Impairment and Blindness, 90, 21-35.. De Volder, A. G., Catalan-Ahumada, M., Robert, A., Bol, A., Labar, D., ... Journal of Visual Impairment and Blindness, 92, 615-632.. Buckingham, G., Milne, J. L., Byrne, C. M., & Goodale, M. A. (2014). ...

https://www.psychologicalscience.org/observer/using-sound-to-get-around/comment-page-1

Amygdala activation for eye contact despite complete cortical blindness. J. Neurosci. 33, 10483-10489. doi: 10.1523/JNEUROSCI. ... Asymmetric Frontal Cortical Activity. More direct brain research evidence associating gaze direction with affective valence ... Harmon-Jones, E., and Gable, P. A. (2018). On the role of asymmetric frontal cortical activity in approach and withdrawal ... Harmon-Jones, E. (2003). Clarifying the emotive functions of asymmetrical frontal cortical activity. Psychophysiology 40, 838- ...

https://www.frontiersin.org/articles/10.3389/fpsyg.2018.01587/full

Cortical blindness refers to the loss of vision that occurs after destruction of the primary visual cortex. Although there is ... A well-known patient with bilateral destruction of his visual cortex and subsequent cortical blindness was investigated in an ... Amygdala Activation for Eye Contact Despite Complete Cortical Blindness. The Journal of Neuroscience, 33(25), 10483-10489. doi: ... who suffered bilateral damage of his primary visual cortex and shows complete cortical blindness. Using a two-alternative ...

https://www.mpi.nl/publications?publication%5B0%5D=publication_date%3A1986&publication%5B1%5D=publication_date%3A1987&publication%5B2%5D=publication_date%3A1995&publication%5B3%5D=publication_date%3A2013&publication%5B4%5D=publication_date%3A2018

A)Cortical Blindness.. B)Kluver‐Bucy syndrome.. C)Right Parietal Lobe Syndrome. ... Differences between somatosensory cortical areas include. A. the way that they are connected to other cortical areas.. B. the ... A. cortical representations responsible for understanding the brain.. B. cortical representations of the hands and shoulders in ... B. The cortical neurons in the part of the brain that once dealt with somatosensory information for that arm have died.. C. ...

https://www.flashcardmachine.com/uc-davis-npb12.html

Detection of target displacement across saccades in cortical blindness.. Ritchie, K. L., Hunt, A. & Sahraie, A., 2011, In: ...

https://abdn.pure.elsevier.com/en/publications/?ordering=type&descending=false&showAdvanced=false&allConcepts=true&inferConcepts=true&publicationYear=2013&publicationYear=2015&publicationYear=2016&publicationYear=2018&publicationYear=2019&publicationYear=2020&format=&nofollow=true&page=9

Hence, sensory cortical prostheses, in addition to restoring normal neurological functions, may serve to expand natural ... of occipital cortex during sensory substitution training linked to subjective experience of seeing in people with blindness. ... Hence, sensory cortical prostheses, in addition to restoring normal neurological functions, may serve to expand natural ... Thomson, E., Carra, R. & Nicolelis, M. Perceiving invisible light through a somatosensory cortical prosthesis. Nat Commun 4, ...

https://www.nature.com/articles/ncomms2497?error=cookies_not_supported&code=6193130b-3e7b-44bf-83c6-24abbe1472a7

Congenital Stationary Night Blindness Identified in Beagles Variant not detected. Neonatal Cerebellar Cortical Degeneration ...

https://my.embarkvet.com/dog/sweety11

The adult male donor had a history of cerebral palsy, seizures, and blindness. (cdc.gov)
A developmental and epileptic encephalopathy characterized by onset in the first months of life of intractable seizures, severely impaired psychomotor development with poor or absent speech, cortical blindness, and dysmorphic facial features that has_material_basis_in homozygous or compound heterozygous mutation in the DOCK7 gene on chromosome 1p31. (zfin.org)
Autosomal dominant familial cortical myoclonic tremor and epilepsy (FCMTE) is characterized by distal tremulous myoclonus, generalized seizures, and signs of cortical reflex myoclonus. (tremorjournal.org)
It caused an Anoxic Brain Injury and other problems such as cortical blindness, seizures and he is bedridden for the rest of his life and resides in a nursing home. (passiton.com)
Delays in delivering an infant caused a lack of oxygen to reach his brain, resulting in spastic quadriplegic cerebral palsy, cortical blindness and intractable seizures. (wisemorrissey.com)

In 1895, the Austrian psychiatrist and neurologist Gabriel Anton (1858 - 1933) described the case of Juliane Hochriehser, a 69-year-old dairymaid who had anosognosia with cortical deafness due to a lesion on her both temporal lobes. (statpearls.com)
He also outlined other cases of patients with objective blindness and deafness who denied their deficits. (statpearls.com)
Grace was also tested for blindness and deafness during these early months. (blueskiesandgreenpastures.com)
Testing inattentional blindness and deafness on a series of tasks, to see how well people performed with varying intensities of load capacity and what affect this had on attention. (simplybehaviour.com)

citation needed] The most common symptoms of acquired and transient cortical blindness include: A complete loss of visual sensation and of vision Preservation/sparing of the abilities to perceive light and/or moving, but not static objects (Riddoch syndrome) A lack of visual fixation and tracking Denial of visual loss (Anton-Babinski syndrome) Visual hallucinations Macular sparing, in which vision in the fovea is spared from the blindness. (wikipedia.org)
Furthermore, some patients regain vision completely, as is the case with transient cortical blindness associated with eclampsia and the side effects of certain anti-epilepsy drugs. (wikipedia.org)
Summary: Transient cortical blindness is an uncommon but well-known complication following cerebral angiography. (ajnr.org)
Transient cortical blindness is a well-known but rare complication following administration of angiographic contrast agent. (ajnr.org)
The onset of transient cortical blindness occurs within minutes to as much as 12 hours after contrast agent administration ( 8 ). (ajnr.org)
This patient gradually regained his vision within 24 hours consistent with transient cortical blindness. (radiopaedia.org)
2. Sesar A, Cavar I, Sesar A, Sesar I. Transient Cortical Blindness in Posterior Reversible Encephalopathy Syndrome After Postpartum Eclampsia. (radiopaedia.org)

It's called Cortical/Cerebral Visual Impairment, or CVI, and it impacts over 150,000 children in the U.S. alone. (perkins.org)
An inclusive overview of cortical/cerebral visual impairment describing the condition, its causes and associated medical conditions, and the educational and development impacts of brain-based visual impairment. (perkins.org)
Future In Sight strives to raise awareness of Cortical/Cerebral Visual Impairment (CVI) with parents and our school partners. (futureinsight.org)

Blindness is largely preventable, as the major contributing causes (cataract and uncorrected refractive error) are amenable to treatment. (bmj.com)
Cataract (51.2%), cortical blindness (16.3%), and congenital glaucoma (10%) were the leading causes of bilateral blindness in children aged less than 10 years. (dovepress.com)
Cataract of the eye lens is the leading cause of blindness worldwide. (spandidos-publications.com)
Is Cataract a Leading Cause of Blindness in India? (netralayam.com)
You may experience blurry vision or total blindness as your vision gets disturbed due to the cataract, which makes it difficult for the eyes to focus light as they used to. (netralayam.com)
Apart from that, identifying the major causes of blindness and visual impairment, the cataract surgical coverage in the Indian population, results from post-cataract surgery, and the barriers associated with cataract surgery. (netralayam.com)
According to a survey, cataract is the leading cause of blindness and visual impairment of half the population worldwide. (netralayam.com)

Fundoscopy should be normal in cases of cortical blindness. (wikipedia.org)
Two long-surviving cases of cortical blindness are described, one total and the other total except for detection of sudden transitions from light to darkness and darkness to light. (bmj.com)

We report the case of a 16-year-old male patient with cortical blindness after intravenous application of nonionic contrast agent during CT angiography performed because of seizure that was attributed to thrombosis of the basilar artery on the basis of clinical findings. (ajnr.org)

The development of cortical blindness into the milder cortical visual impairment is a more likely outcome. (wikipedia.org)
To our knowledge, the development of cortical blindness after CT angiography has not been described in the literature. (ajnr.org)

Cerebral and cortical blindness, caused by bilateral occipital lobe lesions, is characterized by amaurosis, normally reactive pupils, and an unremarkable fundus appearance. (aao.org)
An occipital lobe stroke can cause a variety of visual changes, which include partial vision loss, complete blindness, and visual hallucinations, as well as some unique visual syndromes. (web.app)
Radio021 · Left centrum semiovale infarct icd 10 · Dafiti bolsas · Pavax nettiauto · Tatuaje tribale · Occipital neuralgia · Waarom · Uppkörning mölndal tips Cerebral arteriopathy with subcortical infarcts and leukoencephalopathy 1, Cortical malformations, occipital, 614115 (3), Corticosteroid-binding globulin Bulldog Kennel Samenvatting Stofwisseling2 Contrast enhancing infarction in occipital lobe (arrow Samenvatting Blok O Stofwisseling 2. (web.app)
CORTICAL BLINDNESS: Infarct of the Occipital Lobe can lead to cortical blindness. (kupdf.net)

3. Waghamare S, Juneja A, Samanta R, Gaurav A. Posterior Reversible Encephalopathy Syndrome-Associated Bilateral Cortical Blindness as Presenting Feature of Severe Pre-Eclampsia. (radiopaedia.org)

He is a well-known vision scientist with extensive experience in the study of human cortical organization for vision, and how this organization is altered by neurologic and ophthalmologic disease. (humanconnectome.org)

Chapter 4 details the visual manifestations of cortical infarction. (aao.org)
However, such subtle difference is indispensable since the cortical damage it involves is from infarction of a specific area in the ventral occipitotemporal cortex of humans which always results in injury or illness. (emory.edu)

Cortical Cataracts. (infobg.net)
In this blog, we will understand the magnitude of cataracts in India, why it is a leading cause of blindness, and the treatment options available. (netralayam.com)
The survey shows that 66% cause of blindness was due to cataracts. (netralayam.com)
These are a few factors that contribute to cataracts, which later become the cause of blindness or visual impairment. (netralayam.com)
Glaucoma, which damages the optic nerve, is second only to cataracts as a leading cause of blindness. (nutri-facts.org)
Nuclear sclerotic cataracts, cortical cataracts, and Posterior subcapsular cataracts can all develop as a natural part of the aging process. (eyecenteroftexas.com)
Cortical cataracts develop on the outer layer of the lens, and are often noticeable in early stages due to white streaks forming on the lens cortex called "cortical spokes. (eyecenteroftexas.com)
While cortical cataracts can be a minor inconvenience in the short term, surgery will ultimately be necessary to correct vision for those affected. (eyecenteroftexas.com)

PhD fellowship in the Cerco laboratory (Toulouse, France) for a multicentric project on cortical reorganization in macular degeneration patients Starting date: October 2022 A PhD fellowship is available to work at the Cerco laboratory (Toulouse, France) under the supervision of Benoit Cottereau (CNRS researcher) and in close collaboration with Carole Peyrin (CNRS research director at the LPNC in Grenoble, France). (visionscience.com)
Macular degeneration (MD) is the leading cause of blindness in countries with ageing populations. (visionscience.com)
o MACULAR DEGENERATION: Secondary to Diabetes, and expected to cause visual blindness. (kupdf.net)
Age-related macular degeneration (AMD) , which gradually destroys sharp, central vision, is the leading cause of blindness and visual impairment among people age 50 and older in the world. (nutri-facts.org)

Rarely, a patient with acquired cortical blindness may have little or no insight that they have lost vision, a phenomenon known as Anton-Babinski syndrome. (wikipedia.org)
Cortical blindness can be associated with visual hallucinations, denial of visual loss (Anton-Babinski syndrome), and the ability to perceive moving but not static objects. (wikipedia.org)
Anton-Babinski syndrome, also known as ABS or Anton syndrome, is visual anosognosia, or denial of vision loss, associated with confabulation, or making up experiences to compensate for memory loss, in the setting of cortical blindness. (statpearls.com)
Anton-Babinski syndrome (Anton syndrome or ABS) is visual anosognosia (denial of loss of vision) associated with confabulation (defined as the emergence of memories of events and experiences which never took place) in the setting of obvious visual loss and cortical blindness. (statpearls.com)
Bilateral cortical blindness and Anton syndrome, are most commonly caused by ischaemic stroke. (web.app)

CT and MR studies of the brain revealed signs of posterior reversible encephalopathy syndrome that is suggested to be related to acute blindness. (radiopaedia.org)
Reversible Cortical Blindness: Posterior Reversible Encephalopathy Syndrome. (radiopaedia.org)
Li Y , Miao Y , Yu M , Zhu Y , Liang Z , Wang Z , Peng Q . Case Report: PRES-Like Syndrome With Reversible Cortical Blindness Associated With Essential Thrombocythemia. (wjgnet.com)
Shannon J, Auld J. Blue rubber bleb naevus syndrome associated with cortical blindness. (medscape.com)

Acquired cortical blindness is most often caused by loss of blood flow to the occipital cortex from either unilateral or bilateral posterior cerebral artery blockage (ischemic stroke) and by cardiac surgery. (wikipedia.org)
Congenital cortical blindness is most often caused by perinatal ischemic stroke, encephalitis, and meningitis. (wikipedia.org)
In simpler terms, Cortical blindness is the complete or partial loss of vision in an eye that has been damaged due to loss or injury to the visual cortex, that part of the cerebral cortex that is responsible for vision, through stroke, traumatic brain damage, cerebral hemorrhaging, and infection such as encephalitis or meningitis . (epainassist.com)
The occurrence of acquired cortical blindness is due to the lack of flow of blood to the occipital cortex, either due to cardiac surgery or ischemic stroke where there is blockage of cerebral artery which can be unilateral or bilateral. (epainassist.com)
The cause of congenital cortical blindness can be because of meningitis, perinatal ischemic stroke or encephalitis. (epainassist.com)
This investigational treatment engages associative learning mechanisms that modulate the activity of intact cortical areas with the goal to improve performance in patient populations with neurological sequelae as a result of stroke or, traumatic brain injury or, tumor resection. (bcm.edu)
Examples are cortical blindness due to meningitis or anoxia, optic neuritis as a consequence of demyelination, optic atrophy, stroke, and compression of the optic pathways by tumors, amblyopia, and neurofibromatosis. (dracklab.com)

Dominic is a seven-year-old boy that was born with Chromosome 5 deletion, cortical blindness, developmental delay, chronic bronchitis, seizure disorder, and neuromuscular problems. (angelashouse.org)
As a result, it is alleged that he developed hypoxic ischemic encephalopathy, cortical blindness, developmental delays, and seizure disorders. (njlitigationblog.com)

With all these manifestations and applying the clinical criteria of the international tuberous sclerosis complex consensus of 2012, we confirmed the diagnosis of tuberous sclerosis complex (TSC) and cortical blindness. (egms.de)
A long-standing enigma in psychiatry has been why no-one has been able to find someone who has both congenital blindness and a diagnosis of schizophrenia. (mindhacks.com)
No cases were found were people had a diagnosis of schizophrenia and were congenitally cortically blind - where blindness was caused by problems with the brain's visual system. (mindhacks.com)
What this new study provides is weak evidence for the possibility of certain sorts of blindness coexisting with a diagnosis of schizophrenia and more comprehensive support for the curious finding that blindness seems to reduce the risk of developing psychosis. (mindhacks.com)
We discuss the difference between ocular blindness and cerebral/cortical blindness, the event that led Stephanie to discover her son's CVI, and how he processes sight with words, the importance of mobility and orientation skills to help navigate the world, and the challenges the Duesing family endured in trying to receive a diagnosis for Sebastian's condition. (iono.fm)
Another option is usually for diagnosis and water infected preauricular incision with polycystic ovarian cortical grey matter how to lack rigour. (kelipaan.com)

A new study publishing 25 October in the open-access journal PLOS Biology by Elisa Castaldi and Maria Concetta Morrone from the University of Pisa, Italy, and colleagues investigates the brain's capability to process visual information after many years of total blindness, by studying patients affected by Retinitis Pigmentosa, a hereditary illness of the retina that gradually leads to complete blindness. (neurosciencenews.com)
AMD itself cannot lead to complete blindness because it only affects central vision, but it can interfere with everyday activities such as driving, reading, writing, cooking, watching TV, and being able to see other people's faces. (antiessays.com)

Three hours after CT, he developed blurred vision, which progressed to bilateral blindness. (ajnr.org)
Bilateral blindness was defined as habitual VA worse than 3/60 in the better eye. (bmj.com)
The overall age adjusted (adjusted to the 1990 Indonesia census population) prevalence rate of bilateral low vision was 5.8% (95% confidence interval (CI) 4.2 to 7.4) and bilateral blindness was 2.2% (95% CI 1.1 to 3.2). (bmj.com)

Multimodal integration of sensory inputs has been shown to occur at different midbrain and cortical levels ( Stein and Meredith, 1993 ). (jneurosci.org)

He suffered from cortical blindness, profound hearing loss, developmental delay and Cerebral Palsy. (gofundme.com)
This resulted in diagnoses of cerebral palsy, cortical blindness, intractable epilepsy, and developmental delay. (donordrive.com)

The commonly observed symptoms were convulsions and drowsiness, and most patients complained of signal symptoms such as headache, nausea, and cortical blindness before onset. (elsevier.com)
This case demonstrates the main symptoms of ABS, including acutely acquired blindness and anosognosia in the presence of relatively well-preserved cognition. (statpearls.com)

Cortical blindness and cortical visual impairment (CVI), which refers to the partial loss of vision caused by cortical damage, are both classified as subsets of neurological visual impairment (NVI). (wikipedia.org)
The term Neurological Visual Impairment (NVI) covers both CVI and total cortical blindness, but sometimes these terms are confused. (angelswithspecialneeds.org)

If there is unilateral ______ blindness or enucleation, visual fields in the remaining eye are scored. (medscape.com)
The anterior segment and lens of subjects with low vision or blindness (both unilateral and bilateral) (n=66) were examined using a portable slit lamp and fundus examination was performed using indirect ophthalmoscopy. (bmj.com)
The aim of this study was to determine the prevalence and causes of bilateral and unilateral blindness in the town of Douala and its environs based on data from the ophthalmic unit of a tertiary hospital in Douala. (dovepress.com)

Cortical blindness is a condition in which the eyes are structurally normal and the pupillary reflexes are maintained, however, there is loss of vision secondary to lesions affecting the occipital cortex bilaterally 1 . (radiopaedia.org)
One such impairment is the cortical blindness which is the loss of vision because of bilateral lesions of a section of the brain called geniculocalcarine pathways. (epainassist.com)
Another cortical blindness form known as Riddoch phenomenon occurs from lesions formed in the occipital cortex which impairs the ability of the person from seeing static objects. (epainassist.com)
Retrochiasmal lesions downstream of the optic radiation, which result in cortical blindness. (bcm.edu)

Ändringar på en CT kanske inte syns Foto handla om Cerebral infarkt på den vänstra halvklotet (den Ischemic slaglängden) (CT-bildläsning av hjärnan): Medicin- och vetenskapsbakgrund. (web.app)
SUDDEN LOSS of VISION: Potential Causes o AMAUROSIS FUGAX: Temporary, monocular, ischemic blindness. (kupdf.net)

What are the main causes of blindness? (infobg.net)

The most common cause of blindness in one eye is reduced blood flow. (infobg.net)

The MR study shows bilateral occipital, posterior parietal, and posterior centrum semiovale cortical and subcortical patchy and multifocal signal alterations eliciting high signal in T2 and FLAIR with no evidence of restriction in the diffusion study. (radiopaedia.org)

Cortical blindness is self-limiting and characterized by bilateral amblyopia or amaurosis, normal papillary reflexes, unaltered extraocular movements, and normal fundi. (ajnr.org)

Carey Y.L. Huh et al, Retinoid therapy restores eye-specific cortical responses in adult mice with retinal degeneration, Current Biology (2022). (medicalxpress.com)

NVI and its three subtypes-cortical blindness, cortical visual impairment, and delayed visual maturation-must be distinguished from ocular visual impairment in terms of their different causes and structural foci, the brain and the eye respectively. (wikipedia.org)
One diagnostic marker of this distinction is that the pupils of individuals with cortical blindness will respond to light whereas those of individuals with ocular visual impairment will not. (wikipedia.org)
Patients with ocular trauma, bandages, pre-existing blindness or other 2 = Forced deviation, or total gaze paresis not overcome by the disorder of visual acuity or fields should be tested with reflexive oculocephalic maneuver. (medscape.com)
Cortical Visual Impairment (CVI) is a form of visual impairment that is caused by a brain problem rather than an eye problem is sometimes termed "ocular visual impairment when discussed in contrast to cortical visual impairment. (angelswithspecialneeds.org)
Average dose difference at each year of life after 30 years of age between ocular UV-B exposure of those with and without cortical opacities. (jamanetwork.com)

Summary: A new study uses retinal prosthetics to assess the brain's ability to process visual information years after blindness occurs. (neurosciencenews.com)
Cortical blindness frequently occurs along with cerebral palsy. (medicalnegligenceny.com)
Our preliminary study demonstrated that by P10, cortical ephrin A5 expression and somatosensory INCs had been altered, foremost us to conclude that the alteration of sensory INCs in our blindness product occurs between P5 and P10, following a adjust in gene expression. (ack1inhibitor.com)

But for most people, glaucoma does not have to lead to blindness. (answersmore.net)

The rates of low vision and blindness increased with age. (bmj.com)
The rates of habitual low vision and blindness in provincial Sumatra, Indonesia, are similar to other developing rural countries in Asia. (bmj.com)
The aim of this report is to document the prevalence rates and causes of low vision and blindness among adults in a rural provincial area in Sumatra, Indonesia. (bmj.com)

In this condition, patients have loss of vision but deny their blindness despite objective evidence of visual loss. (web.app)

Evelina Leivada and Cedric Boeckx from the University of Barcelona in Spain conducted an extensive medical literature search and did come up with some cases of congenital blindness and schizophrenia - 13 in total, although only two case studies (outlining a total of four cases) were found which were convincing enough to be unaffected by other serious problems, like severe genetic disorders. (mindhacks.com)

4. What evidence do we need to evaluate visual disorders, including those that result in statutory blindness under title II? (ssa.gov)
Some disorders, such as cortical visual disorders, may result in abnormalities that do not appear on a standard eye examination. (ssa.gov)
The ideology seems rooted in the anti-psychiatry movement ( see https://en.wikipedia.org/wiki/Anti-psychiatry ) that claimed that many psychiatric disorders were constructs of the medical profession but otherwise fell within the normal range of human behaviors. (corticalchauvinism.com)

and night blindness and depth perception to a retinal or cortical issue. (modernretina.com)

B) The brain is organized in such a way that the regions that are responsible for some functions such as language and voluntary movement are distributed across brain regions so that damage to a very small cortical area rarely disrupts these functions. (flashcardmachine.com)
The aim of the project is to better understand the cortical reorganizations that take place in the brain of MD patients and notably in their higher visual cortex after the onset of the disease. (visionscience.com)
The finding that the adult brain has the potential to partially recover from inherited blindness comes from a collaboration between researchers in the University of California, Irvine School of Biological Sciences and the School of Medicine. (medicalxpress.com)
Rarely increased blood pressure can damage the part of the brain (occipital cortex), which is responsible for vision, and this is called cortical blindness. (momjunction.com)
Through Monash University's Cortical Frontiers project, researchers have developed miniaturised, wireless electronic implants that sit on the surface of the brain and have the capacity to restore vision. (bharattimes.com)
"Cortical vision prostheses aim to restore visual perception to those who have lost vision by delivering electrical stimulation to the visual cortex - the region of the brain that receives, integrates and processes visual information," Professor Lowery, also from the University's Department of Electrical and Computer Systems Engineering, said. (bharattimes.com)
The 'Cortical Frontiers: Commercialising brain-machine interfaces' project, led by Dr Lewis, received just more than $1 million under the Federal Government's Medical Research Future Fund (MRFF) Frontier Health and Medical Research Program, announced by Health Minister The Hon Greg Hunt in June 2019, to advance the technology and put forward a detailed plan for future investment. (bharattimes.com)
1. Blindness: Although the anterior visual tracts are intact, bilateral occipital brain damage results in blindness. (statpearls.com)
Cortical Visual Impairment (CVI) is a visual impairment caused by disruption to the visual processing structures in the brain, rather than a problem with the structure or function of the eyes. (highhopesdubai.com)
This additional blindness is termed cortical blindness - essentially, blindness in the brain. (wordpress.com)
Well, because in some people with cortical blindness, even though they can't see particular objects, their subconscious brain still perceives them. (wordpress.com)
Firstly, the fact that some people with cortical blindness experience the phenomenon of blindsight may be because the superior colliculus - an area of the brain important in visual orientation - is preserved. (wordpress.com)
One challenging aspect hindering the elucidation of cortical circuits, is the sheer diversity of neurons in the brain. (fitnessblogger.info)
Similarly when we look at brain waves in the cortical electroencephalogram or EEG, we find so-called 'brain waves' such as the a, b, and g rhythms, which are not only continuous changes but broad spectrum vibrations more characteristic of chaos or edge of chaos dynamics, than the exact resonances of an ordered dynamical system. (dhushara.com)
They determined that she was not deaf, but that she had CVI, cortical vision impairment , which means "a decreased visual response due to a neurological problem affecting the visual part of the brain. (blueskiesandgreenpastures.com)
These knowledge counsel that cortical gene expression plays a function in the advancement of appropriate intraneocortical connectivity, providing even further proof for the conversation of the two features of brain growth initially reviewed by Huffman. (ack1inhibitor.com)

This often results in loss of communication, cortical blindness, requirement of tube feeding, total incontinence, wheelchair dependence or complete loss of voluntary movement. (benzinga.com)

o RETINAL DETACHMENT: Flashing lights, floating halos, and blurry vision before the blindness is indicative of retinal detachment. (kupdf.net)

Interestingly, the patient could see only the test Ishihara plate although he had no history of color blindness. (modernretina.com)
Resulting from the trauma of cerebral cortex, cerebral achromatopsia is a special form of color-blindness that is subtly different from other kinds of color-blindness. (emory.edu)

Hence, sensory cortical prostheses, in addition to restoring normal neurological functions, may serve to expand natural perceptual capabilities in mammals. (nature.com)
Enucleation-induced alterations in cortical connectivity come about in the 2nd postnatal week right after gene expression is modified.In this research we applied a sensory deprivation design to establish whether deprivation sales opportunities to a adjust in gene expression adopted by a remodeling of intraneocortical connections, or vice versa. (ack1inhibitor.com)
Earlier facts led us to hypothesize that acute visible deprivation accomplished by bilateral enucleation would initial produce a adjust in cortical gene expression followed by reworking of sensory INCs in cortex. (ack1inhibitor.com)

Cortical blindness is the total or partial loss of vision in a normal-appearing eye caused by damage to the brain's occipital cortex. (wikipedia.org)

The prevalence of LCA is 1/50,000 - 1/33,000 live births and accounts for 5% of all retinal dystrophies and 20% of blindness in school age children. (orpha.net)
Blindness remains a public health problem in the Douala region with a hospital prevalence which is relatively higher than the national estimate given by the National Blindness Control Program. (dovepress.com)

We apply this investigational treatment to patients with impairments of the following cortical systems: 1. (bcm.edu)
Contracting for vision services is an important step in making a school district's general education curriculum accessible to students with blindness or vision impairments. (futureinsight.org)

Leber congenital amaurosis (LCA) is a retinal dystrophy defined by blindness and responses to electrophysiological stimulation (Ganzfeld electroretinogram (ERG)) below threshold, associated with severe visual impairment within the first year of life. (orpha.net)

Spontaneous and training-induced cortical plasticity in MD patients: Hints from lateral masking. (visionscience.com)
The overall aims of our lab are to study the mechanisms of adaptive plasticity/reorganization of cortical functions using neuroimaging modalities and techniques: 1. (bcm.edu)

Patients with cortical blindness will not be able to identify the item being questioned about at all or will not be able to provide any details other than color or perhaps general shape. (wikipedia.org)
In patients with acquired cortical blindness, a permanent complete loss of vision is rare. (wikipedia.org)
4. Motion blindness: Patients will be able to see objects but will not be able to appreciate their motion. (statpearls.com)

Anatomy4

Organisms2

Diseases35

Chemicals and Drugs4

Analytical, Diagnostic and Therapeutic Techniques and Equipment11

Psychiatry and Psychology3

Phenomena and Processes3

Disciplines and Occupations1

Anthropology, Education, Sociology and Social Phenomena4

Humanities1

Information Science1

Named Groups1

Health Care7

Geographicals6

Residual vision in the blind field of hemidecorticated humans predicted by a diffusion scatter model and selective spectral absorption of the human eye. (1/57)

Cortical blindness and seizures in a patient receiving FK506 after bone marrow transplantation. (2/57)

Chronic cortical visual impairment in children: aetiology, prognosis, and associated neurological deficits. (3/57)

Visual perception of motion, luminance and colour in a human hemianope. (4/57)

The oculomotor distractor effect in normal and hemianopic vision. (5/57)

Intact verbal description of letters with diminished awareness of their forms. (6/57)

Cerebral infarction complicating intravenous immunoglobulin therapy in a patient with Miller Fisher syndrome. (7/57)

Cortical blindness: an unusual sequela of snake bite. (8/57)

Blindness

Night Blindness

Blindness, Cortical

Vision, Low

Onchocerciasis, Ocular

Cataract

Visually Impaired Persons

Xerophthalmia

Trachoma

Eye Diseases, Hereditary

Visual Acuity

Eye Diseases

Vision Disorders

Glaucoma

Cataract Extraction

Refractive Errors

Vitamin A Deficiency

Eye Injuries

Electroretinography

Macular Degeneration

Corneal Diseases

Nepal

Prevalence

Color Vision Defects

Onchocerca volvulus

Optic Atrophy

Retina

Retinal Diseases

Ophthalmology

Corneal Opacity

Diabetic Retinopathy

Retinal Degeneration

Retinitis Pigmentosa

Genetic Diseases, X-Linked

India

Onchocerciasis

Amaurosis Fugax

Eye Proteins

Keratitis

Age Distribution

Dark Adaptation

Glaucoma, Open-Angle

Aphakia

Leber Congenital Amaurosis

Retinopathy of Prematurity

Nigeria

Retinal Rod Photoreceptor Cells

Trichiasis

Rural Health

Education, Special

Vision, Ocular

cis-trans-Isomerases

Cartoons as Topic

Sex Distribution

Education of Visually Disabled

Photoreceptor Cells, Vertebrate

Pedigree

Vision Screening

Myopia

Uveitis

Eyeglasses

Rhodopsin

Oman

Fundus Oculi

Vitamin A

Sensory Aids

Tonga

Vision Tests

Onchocerca

World Health

Health Surveys

Field Dependence-Independence

Sudan

Color Perception Tests

Residual vision in the blind field of hemidecorticated humans predicted by a diffusion scatter model and selective spectral absorption of the human eye. (1/57)

Cortical blindness and seizures in a patient receiving FK506 after bone marrow transplantation. (2/57)

Chronic cortical visual impairment in children: aetiology, prognosis, and associated neurological deficits. (3/57)

Visual perception of motion, luminance and colour in a human hemianope. (4/57)

The oculomotor distractor effect in normal and hemianopic vision. (5/57)

Intact verbal description of letters with diminished awareness of their forms. (6/57)