BACKGROUND This paper reports population-based data on the prevalence and causes of visual impairment among children and adults in Botucatu, Brazil. METHODS A population-based cross-sectional study was conducted involving a random start point and then systematic sampling of an urban Brazilian population in the city of Botucatu. There were approximately 3,300 individuals aged 1 to 91 years who...

To estimate the prevalence and distribution of uncorrected refractive error among school children in Bongo District Ghana. A descriptive cross-sectional study was conducted 12–15-year-old eighteen public junior high schools External internal eye examinations were while a non–cycloplegic refraction technique used to determine errors children. total 1,705 recruited examined for errors. Their mean...

Parallel rays of light striking the eye in the position of rest are refracted and brought to a focus on the 1 retina. An eye that exhibits this condition is said to be emmetropic (normal). Refractive error or ametropia is said to occur when light rays striking the eye at rest are refracted but, not focused on the retina. Anisometropia is said to occur if there is a 2 difference in the refractiv...

We report the refractive correction of high astigmatism in one eye of a 23-year-old woman following deep anterior lamellar keratoplasty (DALK) using an Artisan iris-fixated, toric, phakic intraocular lens (IOL). One year after implantation, uncorrected and corrected distance visual acuities were both 20/25, refraction was -1.00 D cylinder, and the endothelial cell count was 1827 cells/mm(2). Ir...

Purpose. To evaluate outcomes in astigmatic patients implanted with the Trulign (Bausch + Lomb) toric presbyopia-correcting intraocular lens (IOL) during cataract surgery in a clinical practice setting. Methods. Retrospective study in 40 eyes (31 patients) that underwent cataract extraction and IOL implantation in a procedure using intraoperative wavefront aberrometry guidance (ORA system). End...

Eighty percent of all visual impairment can be prevented or cured by considering the two leading causes in world, i.e., uncorrected refractive error and cataract. Cataracts cause vision loss owing to clouding lens, with age being greatest risk factor. Cataract surgery greatly improve is highly effective. It most commonly performed developed countries. Uncorrected resolved simply wearing proper ...