Introduction: According to the literature, Central Retinal Arteriolar Equivalent (CRAE), Central Retinal Venular Equivalent (CRVE), and Artemio Venule Ratio (AVR) are three important markers in determining the changes of retinal artery. These markers are employed as an indicator of cardiovascular effects in workers. This study aimed to evaluate the changes in retinal micro vascular responses in...

Introduction Blue light is a part of the spectrum with the highest energy content, which can reach the retina. The damage that it can cause to the retina is called photochemical or blue-light retinal injury. For the retinal injury assessment of the photochemical and aphakic retinal hazards in the wavelength range of 300-700 nm, use of effective spectral radiance limits (W.m-2.sr-1) seems to be ...

BACKGROUND In this article we share our experience of treating various severities of Coats' disease and focus on optimal therapy for advanced disease. METHODS Retrospective chart review of 10 patients treated with varied techniques including intraocular surgery, cryopexy and/or laser photocoagulation. RESULTS Nine patients were male. At presentation the average age was 4.6 years (range 21 m...

We have shown previously that diabetes causes increases in retinal arginase activity that are associated with impairment of endothelial cell (EC)-dependent vasodilation and increased formation of the peroxynitrite biomarker nitrotyrosine. Arginase blockade normalizes vasodilation responses and reduces nitrotyrosine formation, suggesting that overactive arginase contributes to diabetic retinopat...

Topographic mapping of retinal ganglion axons to the midbrain is computed by the servomechanism model, which is based on the experimental result of cell attachment. Cells expressing a certain level of Eph proteins (receptors for ephrin ligands) optimally attach to a surface that expresses a specific level of ephrin ligand density. The retina has an increasing nasal-to-temporal gradient of Eph r...

Background: In this article we share our experience of treating various severities of Coats’ disease and focus on optimal therapy for advanced disease. Methods: Retrospective chart review of 10 patients treated with varied techniques including intraocular surgery, cryopexy and/ or laser photocoagulation. Results: Nine patients were male. At presentation the average age was 4.6 years (range 21 m...

purpose : to report a case of congenital macular macrovessels case report : an 8-year-old girl was referred for decreased vision in her right eye. her best corrected visual acuity (bcva) in the right eye was 20/200 and in the left eye 20/20. anterior segment examinations were normal in both eyes. posterior segment examination of the right eye showed abnormal macrovessels crossing the macula and...

Retinal ganglion neurons extend axons that grow along astroglial cell surfaces in the developing optic pathway. To identify the molecules that may mediate axon extension in vivo, antibodies to neuronal cell surface proteins were tested for their effects on neurite outgrowth by embryonic chick retinal neurons cultured on astrocyte monolayers. Neurite outgrowth by retinal neurons from embryonic d...

BACKGROUND To evaluate the surgical outcome for management of giant retinal tear (GRT) more than 180° by combined pars plana vitrectomy (PPV), encircling scleral buckle, 360° Laser endophotocoagulation, and silicon oil tamponade. METHODS This was a Prospective, interventional case series study. Twenty four eyes of 23 patients suffering from GRT more than 180° underwent PPV combined with encir...

Introduction Blue light is a part of the spectrum with the highest energy content, which can reach the retina. The damage that it can cause to the retina is called photochemical or blue-light retinal injury. For the retinal injury assessment of the photochemical and aphakic retinal hazards in the wavelength range of 300-700 nm, use of effective spectral radiance limits (W.m-2.sr-1) seems to be...