purpose: to evaluate the success rate of nd:yag laser membranotomy in patients with diabetic premacular hemorrhage. methods: this interventional case series included 24 eyes of 22 patients referred to retina clinic of farabi eye hospital, tehran, iran during 2000-2007 with chief complaint of sudden loss of vision and clinical diagnosis of premacular hemorrhage due to proliferative diabetic reti...

purpose: there are a few researches regarding the effects of islamic fasting on visual system. the aim of this study was to investigate the effects of ramadan fasting on the amplitude of accommodation (aa), near point of convergence (npc), positive and negative fusional vergences (pfv and nfv, respectively) in visually healthy fasters. methods: aa, npc, pfv and nfv at far (6m) and near (40cm) w...

purpose: to determine the efficacy, safety, and stability of these techniques and some factors affecting refractive and visual outcomes in treated patients. methods: 236 lasik-treated eyes (122 patients) and 218 prk-treated eyes (112 patients) with myopia and myopic-astigmatism between -1.25 and -4 diopters (d) underwent refractive surgery over an 11 month period by a single surgeon. patients w...

Branch retinal artery occlusion (BRAO) and branch retinal vein occlusion (BRVO) rarely cause neovascular glaucoma (NVG). A 58-year-old woman with hypertension and type 2 diabetic mellitus complained of progressive visual loss in her right eye for the previous 3 months. At initial examination, visual acuity was 20 / 63 in the right eye. Angle neovascularization was observed and the intraocular p...

OBJECTIVE To report 3 cases of pneumosinus dilatans of the sphenoid sinus associated with visual loss. MATERIALS AND METHODS Retrospective case series describing history of visual loss, visual examination, visual field deficits, and radiologic imaging. RESULTS Three patients developed visual loss associated with pneumosinus dilatans of the sphenoid sinus. CONCLUSIONS Pneumosinus dilatans ...

[Purpose] The purpose of the present study was to examine the relationship between visual perceptual function and manual dexterity in community-dwelling older adults. [Subjects and Methods] Fifty-eight participants were recruited by convenience sampling from local rehabilitation centers. This was a cross-sectional study that used the following four clinical tools: the Mini-Mental State Examinat...

BACKGROUND AND PURPOSE Functional MR (fMR) imaging is based on changes in regional blood flow. The purpose of this study was to evaluate the role of fMR imaging for detection of a vascular compromised status in the occipital lobe in patients with ischemia in the visual cortex. METHODS We performed fMR imaging in seven control subjects and seven patients with symptoms and signs of visual corti...

A 46-year-old man presented with visual disturbances in both eyes. His best corrected visual acuity was 0.7 (both eyes). Ptosis and limitation of ocular movement in every direction were observed. Slit lamp examination showed a bilateral iridescent cataract. Fundus examination showed peripheral depigmentation of the retinal pigment epithelium and pigmentary clumping in both eyes that agreed with...

PURPOSE To present a visual field examination method using virtual reality glasses and evaluate the reliability of the method by comparing the results with those of the Humphrey perimeter. MATERIALS AND METHODS Virtual reality glasses, a smartphone with a 6 inch display, and software that implements a fast-threshold 3 dB step staircase algorithm for the central 24° of visual field (52 points)...