Ophthalmic retinal vessels. Medical search. Frequent questions

The central retinal vein (retinal vein) is a vein that drains the retina of the eye. (wikipedia.org)
T2WI ( B ) image shows retinal detachment as a hypointense fine linear structure (R) and clearly demarcates the dysplastic retinal tissue (D). After we applied the contrast material ( C , contrast-enhanced fat-suppressed T1WI image), the latter shows enhancement (D), in contrast to the detached retina (R) and subretinal fluid. (ajnr.org)
Glaucoma leads to the loss of retinal ganglion cells and their axons but also to tissue remodelling which involves both the optic nerve head and the retina. (molvis.org)
In people with RVO, a blood vessel that carries blood away from the retina (vein) becomes blocked. (clinicaltrials.gov)
Occasionally, traction may occur on the peripheral retina, perifoveal macula, or retinal blood vessels as a PVD occurs. (aao.org)
Retinal tears (breaks) are often the result of vitreous traction on the retina during or after a PVD or secondary to ocular trauma. (aao.org)
Histologic examination of retinal tears reveals that the vitreous adheres to the retina along the flap of the tear. (aao.org)
In the area of retina separated from the underlying retinal pigment epithelium (RPE), there is loss of photoreceptors. (aao.org)
When combined with a state-of-the-art ophthalmic imaging platform, highly detailed images of the cells in the human retina can be acquired. (nih.gov)
We are particularly interested in studying the outer retina, consisting of photoreceptor neurons, retinal pigment epithelial cells, and choriocapillaris blood vessels. (nih.gov)
If untreated, there is a very high chance that it can lead to retinal detachment ("detached retina") and vision loss. (newportretina.com)
AO-assisted imaging is able to monitor changes in retinal microstructure at a pre-clinical stage of disease, opening up the possibility of new diagnostic and treatment protocols to preserve the normal functioning of the retina. (universityofgalway.ie)
Juxtapapillary retinal capillary hemangiomas are less common, representing about 11% to 15% of cases, and their appearance can vary depending on whether the lesion is endophytic (grow from the retina into the vitreous gel of the eye), exophytic (grow beneath the retina), or sessile (flat). (eyecancer.com)
Therefore adults with a normal retina at age 30 years may have a low risk of developing a retinal capillary hemangioma during the reminder of their lives. (eyecancer.com)
Retinal artery occlusion refers to blockage of the retinal artery carrying oxygen to the nerve cells in the retina at the back of the eye. (retinaoc.com)
The area of the retina affected by the blocked vessels determines the area and extent of visual loss. (retinaoc.com)
A blockage in the main artery in the retina is called central retinal artery occlusion (CRAO) , which often results in severe loss of vision. (retinaoc.com)
The retinal artery occlusion may be transient and last for only a few seconds or minutes if the blockage breaks up and restores blood flow to the retina, or it may be permanent. (retinaoc.com)
Diabetic retinopathy: Complication of diabetes that damages blood vessels in the retina. (moria-surgical.com)
Retinal detachments or tears: Tears in the retina or separation of the retina from the back of the eye. (moria-surgical.com)
It affects the blood vessels of the retina (the light-sensitive tissue at the back of the eye). (codetvision.com)
Retinal imaging takes a digital picture of the eye and shows detailed imaging of the retina, optic disk, and blood vessels of the eye. (emergenresearch.com)
Retinal imaging exploits high definition imaging devices to generate magnified images of the retina. (emergenresearch.com)
Diabetic retinopathy (DR) is a sight threatening complication of systemic diabetes mellitus that results from damage to the blood vessels of the retina. (institut-vision.org)
The fundus retinal images are directly captured from human eye that includes some other landmarks like microcirculation system of the retina, macula, optic disc, fovea, microaneurysm, and exudates [ 4 ]. (hindawi.com)
These injections slow the secretion of VEGF by retinal cells to prevent the growth of abnormal blood vessels in the retina. (ucdavis.edu)
Although the pathogenesis of neovascular, or wet, AMD (nAMD) is still unknown, it is characterized by the proliferation of abnormal blood vessels in the retina. (ucdavis.edu)
ARMD - Age-related macular degeneration (ARMD) is an acquired degeneration of the retina that causes significant central visual impairment through a combination of non-neovascular (drusen and retinal pigment epithelium abnormalities), and neovascular derangement (choroidal neovascular membrane formation). (dfweyes.com)
It includes the retina and nearby blood vessels and optic nerve. (medlineplus.gov)
Retinal nerve fibers exit the eye through the optic nerve, located nasally and on the same plane as the anatomical center of the retina. (medscape.com)
The outermost layer of the retina, the retinal pigment epithelium, is tightly attached to the choroid. (medscape.com)
Assuming that the ocular media (cornea, anterior chamber, lens, and vitreous) are not cloudy, the living retina can be examined using a direct or indirect ophthalmoscope or a retinal lens at the slit lamp. (medscape.com)
In addition, the retina may be photographed using a retinal camera. (medscape.com)
The arterioles and venules of the retina are the only blood vessels whose wall can be directly examined in the living human without an incision. (medscape.com)
The retina, with the exception of the blood vessels coursing through it, is transparent to the examiner up to its outer layer, the retinal pigment epithelium. (medscape.com)
The examiner sees the neurosensory retina against the background orange color of the melanin containing retinal pigment epithelium and blood-filled choroidal layer of the eye. (medscape.com)
There is a potential space between the neurosensory retina and the retinal pigment epithelium. (medscape.com)
In a retinal detachment, this space fills with fluid and detaches the neurosensory retina from the underlying retinal pigment epithelium. (medscape.com)
There are two circulations to the retina, both supplied by the ophthalmic artery, the first branch of the internal carotid artery on each side. (medscape.com)

Like that blood vessel, it can suffer from occlusion (central retinal vein occlusion). (wikipedia.org)
Approximately 40-50% of patients with GCA have ophthalmologic complications, including visual loss secondary to A-AION, central retinal artery occlusion, homonymous hemianopsia or cortical blindness (uni- or bilateral occipital infarction) [ 6 ]. (intechopen.com)
How to manage central retinal vein occlusion? (ndtv.com)
Home » Frequently asked Questions on Health » How to manage central retinal vein occlusion? (ndtv.com)
From your description it appears that your mother has had a central retinal vein occlusion (CRVO). (ndtv.com)
Researchers are looking for a better way to treat people who have macular edema secondary to retinal vein occlusion (RVO). (clinicaltrials.gov)
1 Complications are rare, but include infarction by unintended occlusion of vessels. (jamanetwork.com)
Inadvertent occlusion of the ophthalmic or central retinal artery during external carotid artery embolization has been reported in 4 cases, 2 - 4 with immediate loss of vision. (jamanetwork.com)
Retinal artery occlusion is usually associated with sudden painless loss of vision in one eye. (retinaoc.com)
Retinal artery occlusion occurs due to blockage of the retinal artery, often by an embolus (a small piece of cholesterol that blocks blood flow) or thrombus (blood clot). (retinaoc.com)
Most retinal artery occlusion patients are in their 60s, and are more commonly men than women. (retinaoc.com)
An important aspect of managing retinal artery occlusion is for your doctor to identify and manage risk factors that may lead to other vascular conditions. (retinaoc.com)
We all referred to an instance of a new pseudomonas aeruginosa subperiosteal abscess in the healthful grownup, challenging simply by ophthalmic artery occlusion. (apoptosis-inhibitors.com)
Multimodal photo validated Hepatitis E virus the diagnosis of ophthalmic artery occlusion. (apoptosis-inhibitors.com)
Retinal artery occlusion causes catastroph- embolysis, and there are only 2 reports on ic, sudden visual loss. (who.int)
More than 90% of eyes with successful use of Reynard and Hanscom's central retinal artery occlusion (CRAO) method [ 4 ], with some modifications, for have a sudden, painless decrease in visual the treatment of retinal artery occlusion. (who.int)

The results of these studies show that vascular changes of retinal vessels are reflected in systemic vessel changes, respectively vascular diseases. (touchophthalmology.com)
Variations in vessel caliber are associated with increased mortality risk, which we attributed to the likelihood that morphologic changes of retinal arterioles and venules reflect life-threatening changes in cerebral and coronary vessels. (entokey.com)
The paper [ 16 ] searched MEDLINE and EMBASE to find out the relation between microvascular changes of retinal microvasculature and prevalence or incident of stroke. (hindawi.com)

We report a 6-month-old boy who presented with unilateral leukocoria, retinal detachment, and a retrolental mass in a microphthalmic eye based on retinal dysplasia with concurrent optic nerve aplasia. (ajnr.org)
The mass in combination with retinal detachment obscured clear visualization of optic nerve disc and macula. (ajnr.org)
Fundus photograph of the left eye shows a retrolental mass (D, arrows ) in the inferomedial quadrant of the vitreous (V) with large irregular feeder vessels, focal hemorrhages, and retinal detachment (R, arrowheads ). (ajnr.org)
MR imaging showed a mass arising from the nasal ciliary body region with high signal intensity (SI) on T1-weighted (T1WI) and low SI on T2-weighted (T2WI) images, combined with a normal-appearing vitreous and tent-shaped retinal detachment with subretinal exudate ( Fig 2 ). (ajnr.org)
Axial T1WI ( A ) image shows a hyperintense mass in the anterior part of the vitreous (V), adjacent to the ciliary body (CB) on either side of the lens, combined with a tent-shaped retinal detachment with hyperintense subretinal fluid (SF). (ajnr.org)
PVD is important in the pathogenesis of many conditions, including retinal tears and detachment, macular hole formation, and vitreous hemorrhage. (aao.org)
Rhegmatogenous retinal detachment (RRD) occurs when vitreous traction and fluid currents resulting from eye movements combine to overcome the forces maintaining retinal adhesion to the RPE. (aao.org)
Garweg JG, Tappeiner C, Halberstadt M. Pathophysiology of proliferative vitreoretinopathy in retinal detachment. (aao.org)
First Sign of Retinal Detachment? (newportretina.com)
Retinal detachment surgery in Orange County can help repair the retinal detachment and restore your vision. (newportretina.com)
Glial proliferation can lead to tractional retinal detachment and macular pucker. (eyecancer.com)
In late stages they may cause massive exudation and retinal detachment, uveitis (inflammation), glaucoma and phthisis (shrinking of the eye). (eyecancer.com)

Proliferative vitreoretinopathy (PVR) is a blind-causing disease initiated by the activation of retinal pigmented epithelium (RPE) primarily induced by TGF-β families. (stanford.edu)

Ophthalmic examinations including slit-lamp examination, best-corrected visual acuity, intraocular pressure and visual field were carried out. (springer.com)
On ophthalmic evaluation, visual acuity of both eyes was 1/60 on Snellen's chart. (thepajo.org)
Despite the fact that health-related and surgical procedure, the retinal injury has been irrevocable along with visual acuity tied to mild understanding. (apoptosis-inhibitors.com)
In this study, we investigated relationships between vessel caliber indices and various measures of visual function (best-corrected visual acuity [BCVA], VF, and CS) among participants in the Longitudinal Study of the Ocular Complications of AIDS (LSOCA). (entokey.com)
Our study aimed to detect if any specific retinal signs can be attributed to past EVD in survivors, to describe the implications for visual acuity, and to assess for EBOV persistence in survivors with cataracts amenable to cataract surgery where no intraocular inflammation was present. (cdc.gov)

It travels backwards through the centre of the optic nerve accompanied by the central retinal artery before exiting the optic nerve together with the central retinal artery to drain into either the superior ophthalmic vein or the cavernous sinus. (wikipedia.org)

Ophthalmic examination revealed no abnormalities in the right eye. (ajnr.org)
OR (exp Eye/ or exp Eye Abnormalities/) OR (ophthalmic.mp. (dovepress.com)
Retinal microvasculopathy, which has been a common AIDS-related finding at autopsy, is thought to be a contributor to vision abnormalities among people with AIDS, including changes in visual field (VF), reduced CS, and altered color vision. (entokey.com)
These extracted markers or characterized fundus digital image features provide insights and relates quantitative retinal vascular topography abnormalities to various pathologies such as diabetic retinopathy, macular degeneration, hypertensive retinopathy, transient ischemic attack, neovascular glaucoma, and cardiovascular diseases. (hindawi.com)
Retinal microvascular abnormalities like microaneurysm, arteriovenous nicking, haemorrhages, and vessel caliber are considered as associative to the stroke and indicative of death from stroke and IHD (Ischemic Heart Diseases) [ 1 ]. (hindawi.com)

Ophthalmic manifestations of leukemia are more frequent with acute than chronic leukemia and can affect all intraocular structures. (dovepress.com)
PubMed, Embase, and Science Direct databases were searched with the keywords [(Acute Myeloid Leukemia) OR (AML)] AND (Ophthalmic Manifestations). (dovepress.com)
In addition, there is no specific treatment for ophthalmic manifestations of DF. (thepajo.org)
Retinal capillary "Vvon Hippel" hemangioma is one of the most common and often the earliest manifestations of VHL disease and, therefore, ophthalmologists are frequently involved in the care of patients with this disease. (eyecancer.com)
CNS manifestations include vasculitis of small to medium-sized vessels of the brain or spinal cord and granulomatous masses that involve the orbit, optic nerve, meninges, or brain. (medscape.com)

Evidence of acute uveitis on ophthalmic examination ranges from 18% to 58% ( 4 - 7 ). (cdc.gov)
Two published cases ( 9 - 11 ) and 2 case series ( 7 , 12 ) included fundus imaging, which attribute a range of retinal lesions to Ebola uveitis. (cdc.gov)

Ophthalmic Res (2020) 63 (6): 533-540. (karger.com)
Moghimi S, SafiZadeh M, Xu BY et al (2020) Vessel density and retinal nerve fibre layer thickness following acute primary angle closure. (springer.com)
When COVID-19 lockdowns were enforced in 2020, nAMD patients were forced to stop their essential ophthalmic visits. (ucdavis.edu)

Dynamic vessel analysis is the key technology for the early detection of vascular dysfunctions, which again play an important role in the field of retinal and systemic vascular diseases. (touchophthalmology.com)
We are investigating parameters of the photoreceptor mosaic (cone density, regularity, nearest-neighbour distance) and how they change over different stages of retinal diseases. (universityofgalway.ie)
Such a relationship with retinal vascular disease is thought to be the basis for the association between CS and death, supported by the fact that abnormal CS is also related to systemic diseases characterized by microvascular disease. (entokey.com)
Our team of highly trained specialists and the availability of Vabysmo, the innovative treatment for retinal diseases, are ready to provide you with the care you deserve. (codetvision.com)
In June 2023, he joined Prof. Hartnett's lab to conduct postdoctoral research in neovascularization-related retinal diseases. (stanford.edu)

Hou H, Moghimi S, Zangwill LM et al (2019) Macula vessel density and thickness in early primary open-angle glaucoma. (springer.com)
Consequently, the atypical vessels will leak fluid and damage the dense population of color photoreceptors within the macula, causing distorted vision. (ucdavis.edu)

When encountering patients with markedly dilated and tortuous retinal vessels, Wyburn-Mason syndrome (WMS) or racemous angiomatosis (phacomatosis) is commonly thought of as the archetypal entity that can produce these findings. (neurosurgery.directory)
Dilated and tortuous retinal vessels as a sign of Cantu syndrome. (neurosurgery.directory)
Retinal capillary hemangiomas are usually orange red, circumscribed, round, vascular tumors supplied by a pair of dilated and tortuous feeder vessels. (eyecancer.com)

Yarmohammadi A, Zangwill LM, Diniz-Filho A et al (2017) Peripapillary and macular vessel density in patients with glaucoma and single-hemifield visual field defect. (springer.com)
Wang X, Jiang C, Kong X, Yu X, Sun X, Oho AUID (2017) Peripapillary retinal vessel density in eyes with acute primary angle closure: an optical coherence tomography angiography study. (springer.com)

Histopathologic examination revealed a total absence of the optic nerve, scleral lamina cribrosa, and central retinal vessels. (ajnr.org)
The company created new systems for the examination of micro-vascular vessels. (touchophthalmology.com)
An examination report allows the medic to determine the current state of these vessels (normal, narrow or wide) and the vascular risk of the microcirculation of the retinal, as well as of the systemic circulation. (touchophthalmology.com)
Orange County floaters doctor Dr Kawji will tell you if you are a candidate after a careful retinal examination. (newportretina.com)
The fundus findings of retinal capillary hemangioma are usually typical, and diagnosis can be made based on ophthalmoscopic examination. (eyecancer.com)
A total of 82 EVD survivors with ocular symptoms and 105 controls from asymptomatic civilian and military personnel and symptomatic eye clinic attendees underwent ophthalmic examination, including widefield retinal imaging. (cdc.gov)
To study the feasibility involved in care of patients with diabetes of such an endeavour, the capacity of (family physicians, hospital physicians, the current cadre of physicians in retinal diabetologists and other types of doctors) examination of people with diabetes needed in health institutions of the North Sharqiya to be assessed. (who.int)

Figure 1) BRAO appears as an area of superficial retinal whitening along the blocked vessel. (retinaoc.com)
There were no significant correlations for macular vessel density in the superficial retinal layer. (arvojournals.org)
11 Moreover, other OCTA studies have shown changes in the superficial retinal VD in the macular area, where retinal ganglion cells are distributed. (arvojournals.org)

We report a case in which stepwise decline of vision related to progressive swelling of polyvinyl alcohol (PVA) particles lodged in retinal arterioles occurred throughout a period of 8 days. (jamanetwork.com)

After the origin of the ophthalmic artery, the ICA gives off the anterior choroidal and posterior communicating arteries. (medscape.com)
As with other intracranial and intraocular vascular lesions (e.g., arteriovenous malformation in Wyburn-Mason syndrome, retinal hemangioblastoma in von Hippel Lindau disease, and choroidal hemangioma in Sturge-Weber syndrome), the presence of a vascular lesion in either location should prompt evaluation for additional pathology 2) . (neurosurgery.directory)
The second theory suggests that insufficient ocular blood supply, including retinal and choroidal circulation, leads to the development of glaucoma (vascular theory). (arvojournals.org)
Studies on glaucoma using optical coherence tomography angiography (OCTA) have shown changes in the vascular structure of the optic nerve head, including optic disc vessel density (VD), 7 , 8 superficial peripapillary VD, 9 , 10 and peripapillary deep choroidal VD. (arvojournals.org)

The central retinal vein drains into either the superior ophthalmic vein or the cavernous sinus. (wikipedia.org)
in some the central retinal vein drains into the superior ophthalmic vein, and in some it drains directly into the cavernous sinus. (wikipedia.org)

This allows many conditions, such as diabetic retinopathy, retinal detachments, and senile macular degeneration. (elliothospital.org)
This exciting advancement in the treatment of Diabetic Retinopathy and Macular Degeneration underscores CODET Vision Institute's commitment to providing its patients with the most advanced and effective ophthalmic therapies available in the world. (codetvision.com)
The rising adoption of smart devices increases the incidences of ophthalmic disorders, and the rising geriatric population is causing a surge in the patient pool of age-related macular degeneration. (emergenresearch.com)
The most common ophthalmic disorders are age-related macular degeneration, macular edema, and diabetic neuropathy, among others. (emergenresearch.com)

Another advantage of spectral-domain OCT is the generation of en face OCT fundus images, which provide perfect registration for the sectional OCT images. (arvojournals.org)
By using the same technique with generating OCT fundus images, the distribution of retinal reflectivity on the scanned circle was calculated. (arvojournals.org)
The retinal vessel segmentation performance was compared with the ground-truth fundus images. (deepai.org)
We introduce a new technique for generating retinal fundus images that h. (deepai.org)
Digital Retinal Fundus Images helps to detect various ophthalmic disease. (deepai.org)

High density OCT images can significantly improve the image quality and enhance the visualization of especially the structure of small retinal pathologies. (arvojournals.org)
Furthermore, image analysis provides a simple and noninvasive visualization of the retinal blood vessels in those high risk ophthalmologic medical conditions [ 1 - 3 ]. (hindawi.com)

As an example, many retinal conditions affect the photoreceptor cone mosaic. (universityofgalway.ie)

A, The gross photograph shows several retinal tears at the vitreous base. (aao.org)
B, The photomicrograph demonstrates condensed vitreous (arrow) attached to the anterior flap of the retinal tear. (aao.org)
They are well suited for ophthalmic surgery because of the minimal effect on transparent tissues, delivering laser energy through the cornea, lens, and vitreous humor to the opaque structures of the eye. (elliothospital.org)

To demonstrate the new technique for the registration of high-density OCT images to fundus landmarks in fast spectral-domain OCT. To demonstrate the application of fast spectral-domain OCT in studying the behaviors of the parapapillary retinal blood vessel parameters in normal and glaucoma eyes. (arvojournals.org)
Preliminary studies on the parapapillary retinal blood vessel diameters for normal and glaucoma eyes showed a decrease of the total blood vessel diameters for glaucoma patients. (arvojournals.org)
The new technique for blood vessel studies opened a new application area for spectral-domain OCT and has potential application in glaucoma study and diagnosis. (arvojournals.org)
A decrease in N1-P1 amplitude was observed in glaucomatous eyes in relation to a reduction in macular vessel density in the deep retinal layer, which suggests that ischemia-induced bipolar cell dysfunction may be involved in the intermediate retinal dysfunction associated with glaucoma. (arvojournals.org)
Intermediate retinal dysfunction in glaucoma is related to the changes in deep retinal microvasculature. (arvojournals.org)
The first theory suggests that high intraocular pressure causes mechanical damage to the retinal nerve fiber layer at the level of the lamina cribrosa, leading to the development of glaucoma (mechanical theory). (arvojournals.org)

Ophthalmic involvement can be the initial manifestation of the systemic disease or the first sign of relapse. (dovepress.com)

The central retinal vein is formed by the convergence of veins that drain retinal tissue. (wikipedia.org)
The central retinal vein originates within the eyeball, emerging from the eyeball already as a single unified vein. (wikipedia.org)
The central retinal vein runs through the centre of the optic nerve (alongside the central retinal artery) surrounded by a fibrous connective tissue envelope. (wikipedia.org)
It leaves the optic nerve 10 mm from the eyeball[citation needed] along with the central retinal artery, also exiting the meningeal envelope of the optic nerve. (wikipedia.org)
The central retinal vein varies between individuals. (wikipedia.org)
The central retinal vein is the venous equivalent of the central retinal artery. (wikipedia.org)
As the fluid surrounding the optic nerve within its meningeal envelope is contiguous with the cerebrospinal fluid of the central nervous system, increased intracranial pressure can cause compression of the central retinal vein where it emerges from the optic nerve (the accompanying artery is meanwhile less susceptible to compression due to its thicker arterial wall), with the resulting venous congestion causing oedema of the optic nerve (papilledema). (wikipedia.org)
As the ophthalmic artery traverses the optic nerve, it gives off the central retinal artery and, more distally, the posterior ciliary arteries. (medscape.com)
A watershed area is delineated near the head of the optic nerve between the posterior ciliary artery and the central retinal artery. (medscape.com)
Colour Doppler imaging was used to assess the peak systolic and end-diastolic blood velocities as well as resistivity index in the ophthalmic, central retinal and posterior ciliary arteries. (bmj.com)
The Vesselmap software enables to determine the arterio-venous ratio and the central arterial and venous vessel diameter equivalent in line with the various epidemiological studies, e.g. the Atherosclerosis Risk in Communities (ARIC) study. (touchophthalmology.com)
An ophthalmic artery and a central retinal artery (an artery that branches off of the ophthalmic artery) provide blood to each eye. (msdmanuals.com)
Similarly, ophthalmic veins (vortex veins) and a central retinal vein drain blood from the eye. (msdmanuals.com)
Semi-automated grading of fundus photographs (1 eye/participant) determined central retinal artery equivalent (CRAE), central retinal vein equivalent (CRVE), and arteriole-to-venule ratio (AVR) at baseline. (entokey.com)

Moghimi S, SafiZadeh M, Fard MA et al (2019) Changes in optic nerve head vessel density after acute primary angle closure episode. (springer.com)
North America retained the largest share of the global retinal imaging market in 2019 and is expected to show significant growth over the projected period. (emergenresearch.com)

The precise pathophysiology of ophthalmic complications in dengue is not well understood. (thepajo.org)
Herein, we report a case of bilateral retinal hemorrhages with macular edema in a patient with neurological complications due to DF. (thepajo.org)

The first device of Imedos, the Retinal Vessel Analyser (RVA), was able to establish itself in the field of scientific ophthalmology. (touchophthalmology.com)

According to the study of [ 12 ] with a multiethnic cohort, retinal arteriolar narrowing and retinopathy of diabetic free people have an association with increased risk of acute stroke. (hindawi.com)

midbrain and retinal arteriovenous malformations. (neurosurgery.directory)

The purpose of an ophthalmic adaptive optics system is to compensate for wavefront aberrations caused by a distorting ocular medium, which blurs the retinal field. (universityofgalway.ie)

Dysplastic retinal tissue, a rare congenital defect, may create a clinical and radiologic picture of an intraocular mass closely resembling tumor tissue. (ajnr.org)
There is no retinal tissue overlying the optic nerve head. (medscape.com)

Various diagnostic techniques are used to analyze retinal microvasculature image to enable geometric features measurements such as vessel tortuosity, branching angles, branching coefficient, vessel diameter, and fractal dimension. (hindawi.com)
Some distinct changes in the retinal microvasculature are recognized as the preindicator of subsequent vascular incidents like ischemic stroke or acute stroke [ 10 ]. (hindawi.com)

This is almost invariably due to giant cell arteritis (GCA), which is a primary vasculitis that affects extracranial medium (especially external carotid artery-ECA-branches) and sometimes large arteries (aorta and its major branches)-large-vessel GCA [ 3 , 4 ]. (intechopen.com)
Fluorescein angiography (FA) shows a delay in filling of the retinal arteries. (retinaoc.com)

Analysis of the human fundus eye images has become the key point for diagnosing the various pathologies of retinal vasculature. (hindawi.com)

Midperipheral retinal microcirculation increased 23% (P =.03) with latanoprost. (duke.edu)

However, in contrast to many lesions in the differential diagnosis of leukocoria, to our knowledge, detailed MR imaging findings in retinal dysplasia have not been previously reported. (ajnr.org)

Retinal dysplasia is a rare cause of childhood leukocoria, which can cause considerable diagnostic difficulty in the differentiation of benign and malignant intraocular pathology. (ajnr.org)

Prominent irregular feeder vessels and small focal hemorrhages covered the surface of the mass. (ajnr.org)

The main ophthalmic finding in VHL is retinal capillary hemangioma, which is a benign hamartoma. (eyecancer.com)
If a patient has a solitary retinal capillary hemangioma, they do not necessarily have VHL disease. (eyecancer.com)
Retinal capillary hemangioma usually manifests as a solitary tumor, but approximately one-third of patients have multiple retinal hemangiomas, and up to half of patients have bilateral involvement. (eyecancer.com)
The mean age at diagnosis of retinal capillary hemangioma in VHL disease is approximately 25 years, and most patients present between the ages of 10 and 40 years. (eyecancer.com)
The probability of developing a retinal capillary hemangiomas increases progressively with age. (eyecancer.com)
The natural course of retinal capillary hemangiomas is variable (progression, stability or spontaneous regression). (eyecancer.com)
After retinal capillary hemangioma, the most frequently affected organ systems are the CNS, kidneys and adrenal glands, many of them occurring years after the initial presentation with retinal capillary hemangiomas. (eyecancer.com)

Fu L, Fung FK, Lo AC et al (2018) Transcorneal electrical stimulation inhibits retinal microglial activation and enhances retinal ganglion cell survival after acute ocular hypertensive injury. (springer.com)
Correlations among the ocular parameters, macular vessel density, and multifocal electroretinographic parameters were evaluated using a mixed model. (arvojournals.org)
A novel retinal lesion following the anatomic distribution of the optic nerve axons occurred in 14.6% (97.5% CI 7.1%-25.6%) of EVD survivors and no controls, suggesting neuronal transmission as a route of ocular entry. (cdc.gov)

To investigate the changes and evaluate the diagnosis value of circumpapillary vessel density (VD) in cases of acute primary angle closure (APAC). (springer.com)
The diagnosis might be confused with retinal macroaneurysm or adult Coats disease when severe exudation exists. (eyecancer.com)
The growing incidence of retinal disorders across the glove, increased efficiency of diagnosis and treatment, and evolution of the retinal imaging systems are projected to propel the industry's growth over the coming years. (emergenresearch.com)

The ophthalmic artery originates from the distal end of the internal carotid artery (ICA). (medscape.com)
1 This occurs either when particles are injected from a proximally placed catheter or when they reflux from distal vessels during flushing. (jamanetwork.com)

In addition, physicians can benefit from this technique as to objectively assess abnormal symptoms such as vessel tortuosity, vessel width, bifurcation angles, branching angles, and vessel caliber. (hindawi.com)

We report a case of bilateral retinal hemorrhages with macular edema in a patient with dengue fever (DF). (thepajo.org)
Isolated cases of retinal hemorrhages and macular edema have been reported in the literature. (thepajo.org)
Retinal or vitreal hemorrhages are rarely observed, occurring in fewer than 3% of cases. (eyecancer.com)

This paper will also review recent research on the image processing-based extraction techniques of the quantitative retinal microvascular feature. (hindawi.com)

Anatomy28

Organisms2

Diseases25

Chemicals and Drugs8

Analytical, Diagnostic and Therapeutic Techniques and Equipment26

Psychiatry and Psychology1

Phenomena and Processes13

Disciplines and Occupations1

Information Science1

Named Groups1

Health Care1

Geographicals1

Retina39

Occlusion16

Changes of retinal3

Detachment12

Epithelium1

Visual acuity5

Accompanied by the central retina1

Abnormalities5

Manifestations5

Uveitis2

20203

Diseases5

Macula2

Dilated and tortuous3

20172

Examination7

Superficial retinal3

Arterioles1

Choroidal4

Superior opht2

Macular Degeneration4

Fundus images5

Visualization2

Photoreceptor1

Vitreous3

Glaucoma6

Systemic1

Central14

20192

Complications2

Ophthalmology1

Retinopathy1

Arteriovenous1

Adaptive optics1

Tissue2

Microvasculature2

Arteries2

Pathologies1

Microcirculation1

Lesions1

Pathology1

Feeder vessels1

Capillary7

Ocular3

Diagnosis3

Distal2

Symptoms1

Hemorrhages3

Microvascular1