PURPOSE To evaluate astigmatism correction, visual performance, intraocular lens (IOL) position, and wavefront error after implantation of toric IOLs in patients with cataract. METHODS This prospective study comprised 30 eyes of 30 patients with cataract who were candidates for phacoemulsification and implantation of the AcrySof toric IOL (Alcon Laboratories, Inc., Fort Worth, TX). Mean preop...

purpose: to determine the accuracy of photorefraction and autorefraction as compared to cycloautorefraction and to detect the repeatability of photorefraction. methods: this diagnostic study included the right eyes of 86 children aged 7‑12 years. refractive status was measured using photorefraction (plusoptix so4, gmbh, nürnberg, germany) and autorefraction (topcon rm800, usa) with and without ...

purpose: to evaluate the effect of location and size of chalazia on refractive error, corneal topography and visual acuity. methods: this randomized non-controlled clinical trial was conducted on patients with chalazion aged more than 3 years with minimum duration of one month. all patients underwent chalazion excision by the internal or external approach. results: two-hundred and fifty-three e...

PURPOSE Reduced stereoacuity is commonly found in association with reduced visual acuity or strabismus and may significantly affect neuro-developmental performance. Treatment for reduced visual acuity due to refractive error or amblyopia is believed to result in improved stereoacuity. This study was undertaken to investigate the effect on stereoacuity of treatment for unilateral visual impairme...

the present study is an attempt to explore any significant relationships between learners’ preferences for error correction, demotivation, and language proficiency (lp). one hundred iranian efl students, including both males and females, studying at the departments of foreign languages of shahid bahonar university of kerman and tehran university took part in this study. in order to obtain the r...

The authors assessed relationships between visual acuity and the amplitude, frequency, intensity, and duration of foveation periods in a retrospective study of 32 patients. Twenty-four patients had congenital idiopathic nystagmus, and eight patients had nystagmus and albinism. Visual acuity was determined for Landolt ring optotypes and, as the extrapolated high-frequency cutoff of the contrast ...