purpose : to assess the results of brachytherapy in patients with recurrent or incomplete excised conjunctival squamous cell carcinoma (scc) and malignant melanoma. methods : three patients underwent brachytherapy of one eye and one patient underwent brachytherapy of both eyes with ruthenium-106 (ru-106) plaques, all of them had a history of incomplete resection or recurrence of the tumor after...

purpose : to determine the optical coherence tomography (oct) findings in eyes with idiopathic perifoveal retinal telangiectasis (ipt) methods : this study is a retrospective review of patient charts, oct, fundus photography, related to 16 eyes (11 patients). results : the most consistent finding of idiopathic perifoveal telangiectasia seen in 93.7% of eyes (15 eyes) on oct was the presence of ...

purpose : to evaluate the structural outcomes of treated neonates with retinopathy of prematurity (rop) methods : in this cross-sectional study from april 2008 to august 2009, 859 patients were investigated. these neonates had been consulted at the retinal clinic of farabi eye hospital of tehran university of medical sciences. those with gestational age of no more than 36 weeks and birth weight...

purpose : to evaluate corneal visco-elasticity and intraocular pressure (iop) changes measured by an ocular response analyzer (ora) after scleral buckling methods : fifty-six eyes with history of scleral buckling surgery three months ago were included in the study. corneal hysteresis (ch), corneal resistance factor (crf), corneal-compensated iop (iopcc) and goldmann-correlated iop (iopg) were m...

Molecular genetic experiments are revealing how the fly brain generates behavioral responses to visual stimuli.

Vitrectomy was performed on 25 eyes in 21 patients with chronic uveitis from various etiologies. Postoperative follow up averaged 22.8 months with visual improvement in 24 of 25 eyes. In this retrospective study, the techniques employed and the beneficial effect of vitrectomy alone or vitrectomy combined with cataract surgery (Iensectomy in most cases) on improving vision and decreasing th...

The objective of this study is development of driver’s sleepiness using Visually Evoked Potentials (VEP). VEP computed from EEG signals from the visual cortex. We use the Steady State VEPs (SSVEPs) that are one of the most important EEG signals used in human computer interface systems. SSVEP is a response to visual stimuli presented. We present a classification method to discriminate between...

purpose: to report the efficacy of a single intravitreal injection of bevacizumab (ivb) alone or in com-bination with intravitreal triamcinolone acetonide (ivt) versus macular laser photocoagulation (mpc) as primary treatment for diabetic macular edema (dme). methods: this randomized three-arm clinical trial included 103 eyes of 97 patients with clinically significant dme and no previous treatm...

purpose: to compare long-term results of excimer laser sub-epithelial keratectomy (lasek) and laser in situ keratomileusis (lasik) for low to moderate myopia. methods: in a comparative case series, visual outcomes in 415 lasik-treated eyes (212 patients) and 359 lasek-treated eyes (194 patients) with myopia ranging from -1.5 to -5 diopters (d) and astigmatism up to -2.75 d using a flying spot e...