PURPOSE The effect of polydeoxyribonucleotide (PDRN) eye drops vs placebo on corneal epithelial healing after photorefractive keratectomy (PRK) for correction of myopic and myopic-astigmatic defects was evaluated in a randomized, double-blind clinical trial. Primary endpoint for efficacy was the evolution of corneal re-epithelialization. Secondary endpoint was the evaluation of PDRN eye drops t...

Non-human primates are being used to develop a cortical visual prosthesis for the blind. We use the properties of electrical microstimulation of striate cortex (area V1) of macaque monkeys to make inferences about phosphene induction. Our analysis is based on well-established properties of V1: retino-cortical magnification factor, receptive-field size, and the characteristics of hypercolumns. W...

PURPOSE To report the long-term follow-up results after cyclocryotherapy, applied to the 3-o'clock and 9-o'clock positions in blind refractory glaucoma patients. METHODS We retrospectively reviewed the charts of 19 blind patients, and a total of 20 eyes with refractory glaucoma who were treated with cyclocryotherapy. Cyclocryotherapy treatments were performed using a retinal cryoprobe. The te...

AIMS To derive preliminary estimates for the number of adults in China suffering from glaucoma, and project the burden of visual morbidity attributable to primary and secondary glaucoma. METHODS Age and sex specific data from two population surveys were applied to US Census Bureau population estimates for urban and rural China. It was assumed that data from Singapore were representative of ur...

PURPOSE Evisceration is an alternative treatment modality to enucleation for many end-stage eye diseases. No study has addressed the indications for evisceration of eyes in Saudi Arabia. The aim of this study was to determine the current clinical indications for evisceration in patients at a tertiary eye care center and attempt clinicopathological correlation. METHODS Clinical records of pati...

Dichromatic vision is due to the loss of one of the three cone pigments: the L type in protanopes, the M type in deuteranopes, and the S type in tritanopes. In this paper, we show that the dichromatic vision can be simulated by applying transformation to image in CIE x, y chromaticity space. We base our work on the past experiments on unilateral color blind (color blind in one eye) people which...

PURPOSE Cataract is considered the main preventable cause of blindness and visual impairment mainly in poor countries. This study was done to evaluate if cataract is still an important cause of blindness in Central-West region of State of São Paulo, Brazil. METHODS A cross-sectional study was conducted with a systematically randomized sample of households in five cities located in Central-Wes...

Abstrak - Kondisi para penyandang tuna netra sangat membatasi aktifitas yang dapat dilakukan oleh orang tersebut, sehingga mereka butuh lain untuk membantu mereka. Misal mengetahui nilai dari uang kertas, perlu mata melihat tersebut. Para seringkali tertipu dengan jumlah diterimanya. Didasari karena kondisi diatas, hasil penelitian menghasilkan sebuah alat dalam uang, tersebut terdiri komponen ...

OBJECTIVE The effect of radiotherapy on moderate and severe Thyroid associated ophthalmopathy (TAO) was evaluated by various objective and quantitative indexes including T2 signal intensity ratios of orbital MRI inferior rectus and ipsilateral temporal muscle (T2SIR), extraocular muscles (EOM) volume, and the degree of exophthalmos using clinical research with prospective, randomized, double bl...

Twenty-four consecutive patients with Coats's disease are reported. In 9 cases the blind eye was enucleated because of total exudative detachment of the retina or because of untreatable secondary glaucoma. No treatment had been given. Fifteen patients between 22 months and 52 years of age were managed by argon laser or xenon photocoagulation and/or cryocoagulation. The number of treatment sessi...