Asthenopia
Computer Terminals
Tablets
Eclampsia
Waxes
A plastic substance deposited by insects or obtained from plants. Waxes are esters of various fatty acids with higher, usually monohydric alcohols. The wax of pharmacy is principally yellow wax (beeswax), the material of which honeycomb is made. It consists chiefly of cerotic acid and myricin and is used in making ointments, cerates, etc. (Dorland, 27th ed)
Unified Medical Language System
A research and development program initiated by the NATIONAL LIBRARY OF MEDICINE to build knowledge sources for the purpose of aiding the development of systems that help health professionals retrieve and integrate biomedical information. The knowledge sources can be used to link disparate information systems to overcome retrieval problems caused by differences in terminology and the scattering of relevant information across many databases. The three knowledge sources are the Metathesaurus, the Semantic Network, and the Specialist Lexicon.
Natural Language Processing
Strabismus
Misalignment of the visual axes of the eyes. In comitant strabismus the degree of ocular misalignment does not vary with the direction of gaze. In noncomitant strabismus the degree of misalignment varies depending on direction of gaze or which eye is fixating on the target. (Miller, Walsh & Hoyt's Clinical Neuro-Ophthalmology, 4th ed, p641)
Diplopia
A visual symptom in which a single object is perceived by the visual cortex as two objects rather than one. Disorders associated with this condition include REFRACTIVE ERRORS; STRABISMUS; OCULOMOTOR NERVE DISEASES; TROCHLEAR NERVE DISEASES; ABDUCENS NERVE DISEASES; and diseases of the BRAIN STEM and OCCIPITAL LOBE.
Eye
Ear
The hearing and equilibrium system of the body. It consists of three parts: the EXTERNAL EAR, the MIDDLE EAR, and the INNER EAR. Sound waves are transmitted through this organ where vibration is transduced to nerve signals that pass through the ACOUSTIC NERVE to the CENTRAL NERVOUS SYSTEM. The inner ear also contains the vestibular organ that maintains equilibrium by transducing signals to the VESTIBULAR NERVE.
Dry Eye Syndromes
Corneal and conjunctival dryness due to deficient tear production, predominantly in menopausal and post-menopausal women. Filamentary keratitis or erosion of the conjunctival and corneal epithelium may be caused by these disorders. Sensation of the presence of a foreign body in the eye and burning of the eyes may occur.
Oculomotor Muscles
Optometry
Ophthalmology
Bibliography of Medicine
Spiders
Arthropods of the class ARACHNIDA, order Araneae. Except for mites and ticks, spiders constitute the largest order of arachnids, with approximately 37,000 species having been described. The majority of spiders are harmless, although some species can be regarded as moderately harmful since their bites can lead to quite severe local symptoms. (From Barnes, Invertebrate Zoology, 5th ed, p508; Smith, Insects and Other Arthropods of Medical Importance, 1973, pp424-430)
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Life Cycle Stages
Cell Cycle
The complex series of phenomena, occurring between the end of one CELL DIVISION and the end of the next, by which cellular material is duplicated and then divided between two daughter cells. The cell cycle includes INTERPHASE, which includes G0 PHASE; G1 PHASE; S PHASE; and G2 PHASE, and CELL DIVISION PHASE.
Quality of Life
Internet
User-Computer Interface
Molecular Sequence Data
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
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Sleep
MedlinePlus
Accommodation, Ocular
The dioptric adjustment of the EYE (to attain maximal sharpness of retinal imagery for an object of regard) referring to the ability, to the mechanism, or to the process. Ocular accommodation is the effecting of refractive changes by changes in the shape of the CRYSTALLINE LENS. Loosely, it refers to ocular adjustments for VISION, OCULAR at various distances. (Cline et al., Dictionary of Visual Science, 4th ed)
Medical Informatics Computing
Lenses
Myopia
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.
Contact Lenses, Hydrophilic
Vigabatrin
Aminocaproates
4-Aminobutyrate Transaminase
Spasms, Infantile
An epileptic syndrome characterized by the triad of infantile spasms, hypsarrhythmia, and arrest of psychomotor development at seizure onset. The majority present between 3-12 months of age, with spasms consisting of combinations of brief flexor or extensor movements of the head, trunk, and limbs. The condition is divided into two forms: cryptogenic (idiopathic) and symptomatic (secondary to a known disease process such as intrauterine infections; nervous system abnormalities; BRAIN DISEASES, METABOLIC, INBORN; prematurity; perinatal asphyxia; TUBEROUS SCLEROSIS; etc.). (From Menkes, Textbook of Child Neurology, 5th ed, pp744-8)
Epilepsy
A disorder characterized by recurrent episodes of paroxysmal brain dysfunction due to a sudden, disorderly, and excessive neuronal discharge. Epilepsy classification systems are generally based upon: (1) clinical features of the seizure episodes (e.g., motor seizure), (2) etiology (e.g., post-traumatic), (3) anatomic site of seizure origin (e.g., frontal lobe seizure), (4) tendency to spread to other structures in the brain, and (5) temporal patterns (e.g., nocturnal epilepsy). (From Adams et al., Principles of Neurology, 6th ed, p313)
Epilepsy, Complex Partial
A disorder characterized by recurrent partial seizures marked by impairment of cognition. During the seizure the individual may experience a wide variety of psychic phenomenon including formed hallucinations, illusions, deja vu, intense emotional feelings, confusion, and spatial disorientation. Focal motor activity, sensory alterations and AUTOMATISM may also occur. Complex partial seizures often originate from foci in one or both temporal lobes. The etiology may be idiopathic (cryptogenic partial complex epilepsy) or occur as a secondary manifestation of a focal cortical lesion (symptomatic partial complex epilepsy). (From Adams et al., Principles of Neurology, 6th ed, pp317-8)
Abnormal tear dynamics and symptoms of eyestrain in operators of visual display terminals. (1/51)
OBJECTIVES: To clarify the relation between the prevalence of dry eye syndrome and subjective symptoms of asthenopia in visual display terminal (VDT) operators. METHOD: 722 VDT workers (242 subject workers with symptoms of asthenopia and 480 controls without such symptoms) without obvious organic ocular diseases received an ophthalmological examination consisting of refractometry and a tear function (phenol red thread) test. RESULTS: More than 30% of symptomatic workers were found to meet the criteria of dry eye, and the odds ratio compared with the controls was 4.61 (p < 0.001). This odds ratio was significantly greater than that obtained for refractive errors (2.31). CONCLUSIONS: Although this cross sectional study could not prove that dry eyes are the cause of asthenopia, the profound association of dry eyes with symptoms of asthenopia could be verified. It would be useful to carry out tear function tests in workers with symptoms of asthenopia. (+info)Sequelae of sarin toxicity at one and three years after exposure in Matsumoto, Japan. (2/51)
In order to clarify the later sequelae of sarin poisoning that occurred in Matsumoto City, Japan, on June 27, 1994, a cohort study was conducted on all persons (2052 Japanese people) inhabiting an area 1050 meters from north to south and 850 meters from east to west with the sarin release site in the center. Respondents numbered 1237 and 836 people when surveys were conducted at one and three years after the sarin incident, respectively. Numbers of persons with symptoms of sarin toxicity were compared between sarin victims and non-victims. Of the respondents, 58 and 46 people had symptoms associated with sarin such as fatigue, asthenia, shoulder stiffness, asthenopia and blurred vision at both points of the survey, respectively. The prevalences were low; some complained of insomnia, had bad dreams, difficulty in smoking, husky voice, slight fever and palpitation. The victims who had symptoms one year after the incident had a lower erythrocyte cholinesterase activity than did those who did not have symptoms at the early stage; such persons lived in an area with a 500 meter long axis north east from the sarin release site. The three-year cohort study clearly showed that the odds ratios of almost all of the symptoms were high in the sarin-exposed group, suggesting a positive relationship between symptoms and grades of exposure to sarin. These results suggest that symptoms reported by many victims of the sarin incident are thought to be sequelae related to sarin exposure. (+info)Work-related vision hazards in the dental office. (3/51)
Among the numerous threats to the dentist's health there is one relating to the eye. The paper discusses the impact of selected adverse factors on the eye in connection with dental practice in the surgery. (+info)Effects of black current anthocyanoside intake on dark adaptation and VDT work-induced transient refractive alteration in healthy humans. (4/51)
The effects of oral intake of a black currant anthocyanosides (BCA) concentrate on dark adaptation, video display terminal (VDT) work-induced transient refractive alteration, and subjective asthenopia symptoms (visual fatigue) were examined in a double-blind, placebo-controlled, crossover study with healthy human subjects. In a dark adaptation study, intake of BCA at three dose levels (12.5-, 20-, and 50 mg/subject, n = 12) appeared to bring about dose-dependent lowering of the dark adaptation threshold. Statistical analysis comparing the values before and after intake indicated there was a significant difference at the 50 mg dose (p= 0. 011). Comparing the refraction values for the dominant eye, BCA intake (50 mg/subject, n = 21) resulted in no decrease in the average value after the visual task; whereas, a placebo trial resulted in a large decrease in the average value, resulting in borderline significance (p = 0.064). In the assessment of subjective asthenopia symptoms by questionnaire, significant improvement was recognized on the basis of the statements regarding the eye and lower back after BCA intake. (+info)Psychological factors and visual fatigue in working with video display terminals. (5/51)
OBJECTIVES: To examine the part played by psychological factors in complaints about visual health reported by banking officers who work at video display terminals (VDTs). METHODS: Out of a population of 385 bank workers, a group of 212 subjects without organic visual disturbances (as determined by ophthalmological examination) who share a work environment and job duties was selected. Three questionnaires were administered to these subjects: (a) the NIOSH job stress questionnaire; (b) a questionnaire investigating subjective discomfort related to environmental and lighting conditions of the workplace; (c) a questionnaire on the existence of oculovisual disturbances. Correlation and multiple regression analyses were performed to examine for the presence of predictors of asthenopia. RESULTS: Social support, group conflict, self esteem, work satisfaction, and underuse of skills were found to be predictors of visual complaints; social support played a part also as a moderating factor in the stress and strain model; this model accounted for 30% of the variance. Subjective environmental factors, although in some cases significantly correlated with asthenopia, were not found to be strong predictors of the symptoms. CONCLUSIONS: Some part of the complaints about visual health reported by VDT workers are likely indirect expressions of psychological discomfort related to working conditions. (+info)Accommodative microfluctuation in asthenopia caused by accommodative spasm. (6/51)
BACKGROUND: Although many patients complain of eye fatigue caused by accommodative spasm, there have been no reports of a good objective examination method to diagnose it. PURPOSE: The spectral power of the high frequency component of the accommodative microfluctuation (spectral power of HFC) differs according to the constrictive degree of the accommodation. In this paper, we expatiated upon our previously reported analyzing processes of the spectral power of HFC, and we investigated the relationship between normal subjects and subjects with asthenopia. METHOD: The accommodative microfluctuation were recorded when the subjects were looking at a stable target. The waves of the accommodative microfluctuation were analyzed by FFT. RESULTS: The spectral power of HFC for the distant target was 50-60 in the subjects with normal vision, but it was higher in the subjects with asthenopia. CONCLUSION: Our results suggested that the ciliary muscle was also actively working in asthenopia caused by accommodative spasm even if the patient was looking at a distant target. (+info)Post-PRK muscular asthenopia and eccentric ablation. (7/51)
OBJECTIVE: To investigate the relationship between muscular asthenopia post photorefractive keratectomy (PRK) and eccentric ablation. METHODS: 16 eyes of 8 myopia cases whose muscular asthenopia was corrected by subjectively accepted triangular prism after PRK with vision more than 0.8 were followed up for 6-14 months. On the basis of data provided by the pre-PRK, post-PRK and their difference corneal topography, we calculated the real corrected corneal diopter (D) with the Holladay formula and measured the ablating eccentricity (h) and its direction. According to the formula delta approximately Dh, the prism effective value (delta) caused by the eccentric ablation was computed and compared with objectively accepted triangular prism. RESULTS: The subjectively accepted prism was similar to values calculated from the formula. Their mean difference is 0.10 +/- 0.25. The direction of the subjectively accepted prism was in the direction of ablation deviation. CONCLUSIONS: Eccentric ablation was the chief cause of post-PRK muscular visual asthenopia. The triangular prism effective value from eccentric ablation may be estimated by the formula delta approximately Dh. We must pay attention to the diagnosis, treatment and prevention of post-PRK muscular asthenopia. (+info)A novel in vitro model for screening and evaluation of anti-asthenopia drugs. (8/51)
Patients suffering asthenopia are steadily increasing with an expanding use of visual display terminals such as computers. An attempt was made to develop an in vitro model for asthenopia. Ciliary muscle removed from eyeballs of a rabbit was stimulated with acethylcholine, resulting in contraction of the muscle. Repeated stimulations caused decreased contraction, which may be related to fatiguing of ciliary muscle and hence asthenopia. Treatment of the repeatedly stimulated muscle with cyanocobalamin restored contraction dose-dependently. Thus, the model developed in this study can be used to screen drug candidates for treating asthenopia. (+info)
BIOETYMOLOGY : ORIGIN IN BIOMEDICAL TERMS: asthenopia or aesthenopia
The effect of Vaccinium uliginosum extract on tablet computer-induced asthenopia: randomized placebo-controlled study. -...
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Eye Strain Symptoms, Relief, Prevention, Causes & Treatment Patient Comments: Eye Strain - Symptoms and Signs - Viewers Share...
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Eye strain
CC, Han; R, Liu; RR, Liu; ZH, Zhu; RB, Yu; L, Ma (18 October 2013). "Prevalence of asthenopia and its risk factors in Chinese ... Eye strain, also known as asthenopia (from Greek a-sthen-opia, Ancient Greek: ἀσθεν-ωπία, transl. weak-eye-condition), is an ... JE, Sheedy; JN, Hayes; J, Engle (November 2003). "Is all asthenopia the same?". Optom Vis Sci. 80(11): 732-739. doi:10.1097/ ... "Digital Asthenopia: Portuguese Group of Ergophthalmology Survey". Acta Med Port. 32(4): 260-265. doi:10.20344/amp.10942. ...
Accommodative insufficiency
Khurana, AK (September 2008). "Asthenopia, anomalies of accommodation and convergence". Theory and practice of optics and ...
Blurred vision
Khurana, AK (September 2008). "Asthenopia, anomalies of accommodation and convergence". Theory and practice of optics and ...
Accommodation (eye)
ISBN 978-0-7506-7524-6. Khurana, AK (September 2008). "Asthenopia, anomalies of accommodation and convergence". Theory and ...
Computer vision syndrome
Asthenopia (Eye Strain). *Electronic media and sleep. *List of repetitive strain injury software (break reminders) ...
Fixation disparity
Henson, D.B. (1981). "Adaptation to prism-induced heterophoria in subjects with abnormal binocular vision or asthenopia". Am J ...
Muscle imbalance
Further symptoms of strabismus include decreased vision, double vision, headaches, asthenopia and eye fatigue. Scoliosis, is a ...
Convergence insufficiency
They may include, but are not limited to, diplopia (double vision), asthenopia (eye strain), transient blurred vision, ... "Clinical profile of nonstrabismic binocular vision anomalies in patients with asthenopia in North-East India". TNOA Journal of ...
Hans-Joachim Haase (optician)
The Pola-test in asthenopia]. Klinische Monatsblätter für Augenheilkunde (in German). 176 (4). pp. 572-576. doi:10.1055/s-2008- ...
Weakness
Asthenia may be limited to certain organs or systems of organs, as in asthenopia, characterized by ready fatiguability. ...
Pediatric ophthalmology
Accommodative insufficiency Convergence insufficiency and asthenopia Evaluation of visual issues in education, including ...
Photosensitivity in humans
Asthenopia (eye strain) Photophobia Phototoxicity Photosensitivity Photosensitivity in animals Photodermatitis ...
Health effects of 3D
Disorder in which the subject finds it difficult to keep both eyes aligned with each other, causing asthenopia. When the ...
Pseudomyopia
Asthenopia Headache Eyestrain Photophobia Esotropia: Acute onset esotropia may occur in accommodative spasm, which is the ...
Astigmatism (optical systems)
... asthenopia, fatigue, or headaches. There are a number of tests that are used by ophthalmologists and optometrists during eye ...
Macropsia
... asthenopia, reading difficulties, depth perception problems, or double vision. The visual distortion can cause uncorrelated ...
Visual system
Achromatopsia Akinetopsia Apperceptive agnosia Associative visual agnosia Asthenopia Astigmatism Color blindness Echolocation ...
Accommodative excess
Blurring of vision due to pseudomyopia Headache Eye strain Asthenopia Trouble concentrating when reading Accommodative excess ...
Neonatal conjunctivitis
Many different bacteria and viruses can cause conjunctivitis in the neonate. The two most common causes are N. gonorrheae and Chlamydia acquired from the birth canal during delivery. Ophthalmia neonatorum due to gonococci (Neisseria gonorrhoeae) typically manifests in the first five days post birth and is associated with marked bilateral purulent discharge and local inflammation. In contrast, conjunctivitis secondary to infection with chlamydia (Chlamydia trachomatis) produces conjunctivitis after day three post birth, but may occur up to two weeks after delivery. The discharge is usually more watery in nature (mucopurulent) and less inflamed. Babies infected with chlamydia may develop pneumonitis (chest infection) at a later stage (range 2 weeks - 19 weeks after delivery). Infants with chlamydia pneumonitis should be treated with oral erythromycin for 10-14 days.[6] Other agents causing ophthalmia neonatorum include Herpes simplex virus (HSV 2), Staphylococcus aureus, Streptococcus ...
Corneal dystrophy
Diagnosis can be established on clinical grounds and this may be enhanced with studies on surgically excised corneal tissue and in some cases with molecular genetic analyses. As clinical manifestations widely vary with the different entities, corneal dystrophies should be suspected when corneal transparency is lost or corneal opacities occur spontaneously, particularly in both corneas, and especially in the presence of a positive family history or in the offspring of consanguineous parents.. Superficial corneal dystrophies - Meesmann dystrophy is characterized by distinct tiny bubble-like, punctate opacities that form in the central corneal epithelium and to a lesser extent in the peripheral cornea of both eyes during infancy that persists throughout life. Symmetrical reticular opacities form in the superficial central cornea of both eyes at about 4-5 years of age in Reis-Bücklers corneal dystrophy. Patient remains asymptomatic until epithelial erosions precipitate acute episodes of ocular ...
Kayser-Fleischer ring
... s are a sign of Wilson's disease, which involves abnormal copper handling by the liver resulting in copper accumulation in the body and is characterised by abnormalities of the basal ganglia of the brain, liver cirrhosis, splenomegaly, involuntary movements, muscle rigidity, psychiatric disturbances, dystonia and dysphagia. The combination of neurological symptoms, a low blood ceruloplasmin level and KF rings is diagnostic of Wilson's disease.[1] Other causes of KF rings are cholestasis (obstruction of the bile ducts), primary biliary cirrhosis and "cryptogenic" cirrhosis (cirrhosis in which no cause can be identified).[1] ...
Conjunctivitis
... , also known as pink eye, is inflammation of the outermost layer of the white part of the eye and the inner surface of the eyelid.[3] It makes the eye appear pink or reddish.[1] Pain, burning, scratchiness, or itchiness may occur.[1] The affected eye may have increased tears or be "stuck shut" in the morning.[1] Swelling of the white part of the eye may also occur.[1] Itching is more common in cases due to allergies.[2] Conjunctivitis can affect one or both eyes.[1] The most common infectious causes are viral followed by bacterial.[2] The viral infection may occur along with other symptoms of a common cold.[1] Both viral and bacterial cases are easily spread between people.[1] Allergies to pollen or animal hair are also a common cause.[2] Diagnosis is often based on signs and symptoms.[1] Occasionally, a sample of the discharge is sent for culture.[1] Prevention is partly by handwashing.[1] Treatment depends on the underlying cause.[1] In the majority of viral cases, there is no ...
Bietti's crystalline dystrophy
BCD is inherited in an autosomal recessive manner.[2] This means the defective gene responsible for the disorder is located on an autosome, and two copies of the defective gene (one inherited from each parent) are required in order to be born with the disorder. The parents of an individual with an autosomal recessive disorder both carry one copy of the defective gene, but usually do not experience any signs or symptoms of the disorder. BCD is associated with mutations in the CYP4V2 gene.[2] The nematode C. elegans has a duplicated gene (cyp31A2 and cyp31A3) that are orthologous of the human gene. These genes code for cytochrome P450s involved in fatty acid synthesis.[7] ...
Keratoconjunctivitis
... photoelectrica" (arc eye) means inflammation caused by photoelectric UV light. It is a type of ultraviolet keratitis. Such UV exposure can be caused by arc welding without wearing protective eye glass, or by high altitude exposure from sunlight reflected from snow ("snow blindness"). The inflammation will only appear after about 6 to 12 hours. It can be treated by rest, as the inflammation usually heals after 24-48 hours. Proper eye protection should be worn to prevent keratoconjunctivitis photoelectrica ...
Color blindness
Based on clinical appearance, color blindness may be described as total or partial. Total color blindness is much less common than partial color blindness.[5] There are two major types of color blindness: difficulty distinguishing between red and green, and difficulty distinguishing between blue and yellow.[6][7] Immunofluorescent imaging is a way to determine red-green color coding. Conventional color coding is difficult for individuals with red-green color blindness (protanopia or deuteranopia) to discriminate. Replacing red with magenta or green with turquoise improves visibility for such individuals.[8] The different kinds of inherited color blindness result from partial or complete loss of function of one or more of the three different cone systems. When one cone system is compromised, dichromacy results. The most frequent forms of human color blindness result from problems with either the middle (green) or long (red) wavelength sensitive cone systems, and make it hard to discriminate reds, ...
Madarosis
There is currently researching being done to find more treatments dependent on the different pre-existing conditions. Studies are being conducted in which madarosis can be related to malignancy. A study by Groehler and Rose found that there was a statistical significance between these two. They concluded that patients malignancy lesions on the eyelid have a higher chance of having madarosis than a patient with a benign lesion. They stated that despite the fact that it is significant, the absence of madarosis does not mean the lesion cannot be malignant.[10] In many leprosy cases, madarosis is a symptom or a quality after diagnosis. However, in India, leprosy is common and researchers report a case of madarosis before diagnosis of leprosy with no skin lesions, only madarosis. This allowed for quicker treatment.[11] A main reason many people have madarosis is due to the chemotherapy drugs. There was a clinical trial in 2011 that tested an eyelash gel called bimatoprost. This gel enhanced the ...
Heterophoria
... is an eye condition in which the directions that the eyes are pointing at rest position, when not performing binocular fusion, are not the same as each other, or, "not straight". This condition can be esophoria, where the eyes tend to cross inward in the absence of fusion; exophoria, in which they diverge; or hyperphoria, in which one eye points up or down relative to the other. Phorias are known as 'latent squint' because the tendency of the eyes to deviate is kept latent by fusion. A person with two normal eyes has single vision (usually) because of the combined use of the sensory and motor systems. The motor system acts to point both eyes at the target of interest; any offset is detected visually (and the motor system corrects it). Heterophoria only occurs during dissociation of the left eye and right eye, when fusion of the eyes is absent. If you cover one eye (e.g. with your hand) you remove the sensory information about the eye's position in the orbit. Without this, there is ...
Childhood blindness
Braille is a universal way to learn how to read and write, for the blind.[17] A refreshable braille display is an assistive learning device that can help such children in school.[18] Schools for the blind are a form of management, however the limitations of using studies done in such schools has been recognized. Children that are enrolled presently, usually, had developed blindness 5 or more years prior to enrollment, consequently not reflecting current possible causes.[19] About 66% of children with visual impairment also have one other disability (comorbidity), be it, intellectual disabilities, cerebral palsy, or hearing loss.[20] Eye care/screening for children within primary health care is important as catching ocular disease issues can lead to better outcomes.[21] ...
Vogt-Koyanagi-Harada disease
The sequence of clinical events in VKH is divided into four phases: prodromal, acute uveitic, convalescent, and chronic recurrent.[2][5][6]. The prodromal phase may have no symptoms, or may mimic a non-specific viral infection, marked by flu-like symptoms that typically last for a few days.[6] There may be fever, headache, nausea, meningismus, dysacusia (discomfort caused by loud noises or a distortion in the quality of the sounds being heard), tinnitus, and/or vertigo.[6][7] Eye symptoms can include orbital pain, photophobia and tearing.[6] The skin and hair may be sensitive to touch.[6][7] Cranial nerve palsies and optic neuritis are uncommon.[6]. The acute uveitic phase occurs a few days later and typically lasts for several weeks.[6] This phase is heralded by bilateral panuveitis causing blurring of vision.[6] In 70% of VKH, the onset of visual blurring is bilaterally contemporaneous; if initially unilateral, the other eye is involved within several days.[6] The process can include bilateral ...
Asthenopia - Everything2.com
Asthenopia in schoolchildren | OPTH
Results: Asthenopia prevalence was 24.7% in a total sample of 964 children. Visual acuity of 20/25 or better in both eyes was ... Conclusion: Children and adolescents have expressive prevalence of asthenopia. The prevalence of visual function alterations ... Keywords: asthenopia, eyestrain, fatigue, visual, visual fatigue, eye fatigue ... To assess asthenopia prevalence and associated factors in schoolchildren aged 6-16. Methods: This was a cross-sectional study ...
The effect of Vaccinium uliginosum extract on tablet computer-induced asthenopia: randomized placebo-controlled study. -...
Asthenopia was evaluated by administering a questionnaire containing 10 questions (responses were scored on a scales of 0-6; ... We found that oral intake of DA9301 (1000 mg/day for 4 weeks) was effective in alleviating asthenopia symptoms induced by ... The effect of Vaccinium uliginosum extract on tablet computer-induced asthenopia: randomized placebo-controlled study.. Park CY ... To investigate the alleviation effect of Vaccinium uliginosum extract (DA9301) on tablet computer-induced asthenopia. ...
Asthenopia with Genteal
ASTHENOPIA Causes, Patient Concerns and Latest Treatments and Genteal Reports and Side Effects. ... Check out the latest treatments for ASTHENOPIA. ➢ ASTHENOPIA treatment research studies. ➢ Genteal clinical trials, surveys and ... ASTHENOPIA Symptoms and Causes. We are sorry, but no medical information on this topic currently exists in our database. Our ... ASTHENOPIA Clinical Trials and Studies. Treatments might be new drugs or new combinations of drugs, new surgical procedures or ...
Asthenopia and blink rate under visual and cognitive loads
Effects of dietary supplementation with a combination of fish oil, bilberry extract, and lutein on subjective symptoms of...
... and lutein on subjective symptoms of asthenopia in humans. - Fuminori Kawabata, Tomoko Tsuji ... Asthenopia symptoms such as "stiff shoulder, low back pain", "frustration", "dry-eye", and "stuffy head" were improved in the ... Before and after supplementation, subjects completed a questionnaire to determine their asthenopia symptoms and were also ... and lutein on subjective symptoms of asthenopia in humans.. Abstract. The aim of this study was to determine the effects of ...
perceptionsense: Asthenopia
Asthenopia is an eye condition that people commonly call "eye strain." It is a condition in which the eyes tire easily because ... I thought I just needed reading classes or something, and when I went to get an eye exam the doctor told me I had "Asthenopia ... http://medical-dictionary.thefreedictionary.com/asthenopia. Image:. http://www.fujichemical.co.jp/english/newsletter/images/ ...
Asthenopia | Psychology Wiki | Fandom
Asthenopia is an ophthalmological condition that manifests itself through nonspecific symptoms such as fatigue, red eyes, eye ... Sometimes, asthenopia can be due to specific visual problems, such as uncorrected refraction errors or binocular vision ... Amblyopia - Lebers congenital amaurosis - Subjective (Asthenopia, Hemeralopia, Photophobia, Scintillating scotoma) - Diplopia ...
BIOETYMOLOGY : ORIGIN IN BIOMEDICAL TERMS: asthenopia or aesthenopia
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Heterophoria, Asthenopia and Orthoptic Exercises ILV Heterophoria, Asthenopia and Orthoptic Exercises ILV. Lector: Magdalena ... asthenopia); Measures to promote development and maintain health; Advice and information; Legal fundamentals, relevant ... clinical characteristics of heterophoria and asthenopia, complaints and symptoms, basic diagnostics and examination procedures ...
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DailyMed - ZOLPIDEM TARTRATE EXTENDED-RELEASE- zolpidem tartrate tablet, film coated, extended release
In adult and elderly patients treated with zolpidem tartrate extended-release tablets, there was no evidence of accumulation after repeated once-daily dosing for up to two weeks. Absorption Following administration of zolpidem tartrate extended-release tablets, administered as a single 12.5 mg dose in healthy male adult subjects, the mean peak concentration (Cmax) of zolpidem was 134 ng/mL (range: 68.9 to 197 ng/ml) occurring at a median time (Tmax) of 1.5 hours. The mean AUC of zolpidem was 740 ng·hr/mL (range: 295 to 1359 ng·hr/mL). A food-effect study in 45 healthy subjects compared the pharmacokinetics of zolpidem tartrate extended-release tablets 12.5 mg when administered while fasting or within 30 minutes after a meal. Results demonstrated that with food, mean AUC and Cmax were decreased by 23% and 30%, respectively, while median Tmax was increased from 2 hours to 4 hours. The half-life was not changed. These results suggest that, for faster sleep onset, zolpidem tartrate ...
Symptoms of asthenopia5
- Effects of dietary supplementation with a combination of fish oil, bilberry extract, and lutein on subjective symptoms of asthenopia in humans. (curehunter.com)
- The aim of this study was to determine the effects of dietary supplementation with a combination of fish oil, bilberry extract, and lutein on subjective symptoms of asthenopia in humans by a double- blind, randomized, parallel-group, and placebo-controlled trial. (curehunter.com)
- These results suggest that dietary supplementation with the combination of omega-3 fatty acid-rich fish oil, bilberry extract, and lutein may safely improve subjective symptoms of asthenopia and mental fatigue in humans. (curehunter.com)
- The symptoms of asthenopia caused include sensitivity to glare, headaches, sore eyes, and blurred vision. (xtend-life.com)
- Patients with symptoms of asthenopia should call their doctor to set up an eye exam. (bidmc.org)
Convergence insufficiency2
- 1 Therapy for Asthenopia in Cases of Convergence Insufficiency Hiroko TAKASAKI, C.O.J., Nobuko INAGAMI, C.O.J., and Kayoko TAKENAWA, C.O.J.. Orthoptic clinic, Department of Ophthalmology, (Director: Prof Dr. N. Matsuo) Okayama University Medical School, Okayama-shi The usefullness of therapeutic methods for asthenopic problems was studied in nineteen cases of convergence insufficiency. (docsplayer.net)
- Accommodative insufficiency Convergence insufficiency and asthenopia Evaluation of visual issues in education, including dyslexia and attention deficit disorder. (wikipedia.org)
Diplopia1
- The article discusses various issues associated with vertical prism imbalance which includes asthenopia, reading difficulties and diplopia. (ebscohost.com)
Strain9
- Asthenopia is an eye condition that people commonly call "eye strain. (perceptionsense.com)
- Asthenopia is an ophthalmological condition that manifests itself through nonspecific symptoms such as fatigue, red eyes, eye strain, pain in or around the eyes, blurred vision, headache and occasional double vision . (wikia.org)
- Asthenopia or eye strain is an ophthalmological condition in which is observed eye fatigue or tiredness. (blogspot.com)
- Eye strain (asthenopia). (webmd.com)
- Consequences of asthenopia Permanent visual load causes strain the eye muscles. (digfrontiers.com)
- Eye strain, also known as asthenopia (from Greek a-sthen-opia, Ancient Greek: ἀσθεν-ωπία, transl. (wikipedia.org)
- The clinic also cares for patients with asthenopia, or eye strain. (ucsfhealth.org)
- This puts us at risk for asthenopia, or eye strain, with symptoms such as discomfort in or around the eyes, blurred vision, occasional double vision or headaches. (bidmc.org)
- Asthenopia, or eye strain caused by excessive work, is a growing complaint in a world of computers and smart phones. (greenmedinfo.com)
Eyestrain2
- Although over-the-counter (OTC) glasses do not appear to harm vision, if they are not appropriate for a person's eyes, they can cause eyestrain, or asthenopia, after prolonged use. (medicinenet.com)
- This power mismatch, called anisometropia, can also cause eyestrain or asthenopia even though the OTC glasses may be correct for one eye. (medicinenet.com)
Answered a questionnaire1
- A questionnaire on socioeconomic and cultural matters was answered by parents, while the children answered a questionnaire on asthenopia-related symptoms. (dovepress.com)
Prevalence4
- To assess asthenopia prevalence and associated factors in schoolchildren aged 6-16. (dovepress.com)
- Asthenopia prevalence was 24.7% in a total sample of 964 children. (dovepress.com)
- Children and adolescents have expressive prevalence of asthenopia. (dovepress.com)
- To evaluate the prevalence of asthenopia in a cohort of bank employees and identify possible associated risk factors . (bvsalud.org)
Accommodative convergence2
- From this study, it is difficult to draw conclusion, whether deficiency of accommodative convergence or decrease of fusional convergence may play an important role in asthenopia. (docsplayer.net)
- We consider that the decrease of accommodative convergence causes asthenopia, in which near problems could be solved, according as the AC/A ratio normalizes. (docsplayer.net)
Patients2
- The bimedial resection was done in five patients, who had larger angle of exophoria at near distance than that of groups A and B. With these methods, fusional amplitude, as well as AC/A ratio had been improved in all cases and consequently asthenopia disappeared. (docsplayer.net)
- In patients with associated symptoms such as asthenopia, some authors correct errors as low as 0.75 D [ 7 ]. (hindawi.com)
Myopia1
- In combination with the weakness of the accommodation and the voltage convergence asthenopia leads to the development and progression of myopia. (digfrontiers.com)
Fatigue3
- Before and after supplementation, subjects completed a questionnaire to determine their asthenopia symptoms and were also assessed for mental fatigue symptom by the visual analog scale (VAS) test. (curehunter.com)
- It is assumed screens designs which aid the eye in focusing on content [see #1] over extended periods of time will reduce eye fatigue and Asthenopia. (ubuntu.com)
- Asthenopia, or visual fatigue, is a frequent complaint from observers of stereoscopic three-dimensional displays. (nih.gov)
Refractive1
- To be sure, some of the refractive causes of asthenopia are via induced phorias. (aao.org)
Vision4
- Sometimes, asthenopia can be due to specific visual problems, such as uncorrected refraction errors or binocular vision problems like accommodative insufficiency or heterophoria . (wikia.org)
- For good vision and preventing asthenopia important good blood supply. (digfrontiers.com)
- For good vision and preventing asthenopia eyes to many different nutrients: vitamins, minerals and antioxidants. (digfrontiers.com)
- 64-90% of computer users develop a condition called computer vision syndrome (CVS): asthenopia caused by computer use. (greenmedinfo.com)
Eyes2
- Prevention of asthenopia Every hour of hard work to give your eyes rest for 10-15 minutes. (digfrontiers.com)
- The authors thought the display may assist in recovery from asthenopia, which is often caused when the eyes focus on a nearby object for a long time, such as in VDT (Visual Display Terminal) work. (spie.org)
Reduction1
- Reduction of asthenopia following accommodative facility training. (naturaleyecare.com)
Computer3
- The effect of Vaccinium uliginosum extract on tablet computer-induced asthenopia: randomized placebo-controlled study. (nih.gov)
- To investigate the alleviation effect of Vaccinium uliginosum extract (DA9301) on tablet computer-induced asthenopia. (nih.gov)
- We found that oral intake of DA9301 (1000 mg/day for 4 weeks) was effective in alleviating asthenopia symptoms induced by tablet computer watching. (nih.gov)
Objects1
- In general, recovery from asthenopia, and especially accommodative asthenopia, is achieved by focusing on distant objects. (spie.org)
Evidence1
- Whereas the possibility that high-conflict conditions are a cause of asthenopia has been previously reported, this is the first evidence that they specifically affect accommodative responses while viewing stereoscopic displays. (nih.gov)
Conditions1
- Asthenopia has been associated with reading under visually stressful conditions. (nih.gov)
Authors1
- In order to verify this hypothesis, the authors performed visual acuity tests using Landolt rings before and after presenting stereoscopic 3-D images, and evaluated the degree of recovery from asthenopia. (spie.org)
Issues1
- If a patient is complaining of asthenopia and a deviation is discovered during testing, one must first ensure that there are no coexisting issues prior to attributing the symptoms to a phoria. (aao.org)
Effective1
- 2) Recovery from asthenopia was particularly effective for the dominant eye in comparison with the other eye. (spie.org)
Function1
- to stabilize the accommodative function in accommodative asthenopia. (or.jp)
Doctor1
- I thought I just needed reading classes or something, and when I went to get an eye exam the doctor told me I had "Asthenopia. (perceptionsense.com)