PURPOSE To determine the optimal target anisometropia for pseudophakic monovision. METHODS Thirty-five bilaterally pseudophakic patients who received monofocal intraocular lenses were included in the study. Binocular corrected distance visual acuity (CDVA) and binocular distance-corrected near visual acuity (DCNVA) and stereoacuity were measured after simulating 1.00, 1.50, and 2.00 diopters ...

purpose: to evaluate refractive state in patients with unilateral congenital nasolacrimal duct obstruction. methods: in this descriptive prospective study, patients with unilateral congenital nasolacrimal duct obstruction scheduled for surgery were enrolled over a period of two years (2007-2009). cycloplegic refractive error in both eyes was measured under anesthesia before surgery (probing, si...

Dear Editor, Mirror-image twinning with inverse laterality happens in 10% to 15% of monozygotic twins and can be useful in establishing that twinning events have occurred after the cells of the embryonic plate began to lateralize, but before formation of the primitive streak [1]. Previous reports on ocular mirror image included cases with myopic anisometropia, infantile esotropia, infantile nys...

PURPOSE The Aniseikonia Inspector 1.1 (AI) is a new software product to measure aniseikonia using red-green anaglyphs. The purpose of this study was to test whether the AI is a valid and reliable test. METHODS There were two groups of sample subjects: one at risk of aniseikonia, with anisometropia greater than or equal to 1.00 D (n= 29), and a control group (n= 45). The validity was studied b...

During Binocular viewing, the preferential use of dominant eye because of its increased static ciliary muscle tone, might allow the dominant eye more myopic then non dominant eye in anisometropic myopia. However certain studies found that, there was no apparent association between ocular dominance and refraction. The present study was therefore conducted to analyze, the effect of ocular dominan...

+2-00 to +2-75 dioptres of spherical hypermetropia in the more emmetropic of a pair of eyes is significantly associated with esotropia (P less than 0-001) and the presence of amblyopia (P less than 0-01). Anisometropia is not significantly associated with esotropia (P = 0-31) unless there is spherical hypermetropia of +2-00 dioptres or more in the more emmetropic eye (P less than 0-001). Hyperm...

In the first part of the paper we demonstrate that the oculomotor system adapts to prism-induced heterophoria over limited motor fields. In the second part we demonstrate that it can also adapt to an induced anisometropia. When normal subjects are made 3 diopters anisometropic, they initially exhibit a phoria whose magnitude is dependent on eye position. After 21/2 hr of binocular visual experi...

purpose: to determine prevalence and associated factors of refractive errors in elderly population of yazd, iran. methods: this is a cross-sectional population-based survey performed between 2010 and 2011. the participants were among the subjects aged from 40 to 80 years old. the samples were selected from urban and rural inhabitants using multi-stage random cluster sampling design. all partici...