ABSTRACT
ABSTRACT: Purpose: To determine the effects of experimentally induced anisometropia on stereopsis in healthy adults to assess the potentially detrimental effects of uncorrected anisometropia on the development of stereoacuity during childhood. Materials & Methods: The study performed on 100 healthy adult volunteers, 58 male and 42 female (ranging in age from 20-30 years). 3 type of myopic anisometropia were induced in all 100 patients in their left eyes (by plus lenses 0.75 to 2.25 diopter in 0.75 diopter increment). Then stereoacuity was measured by Titmus stereotest. Each patient’s highest level of stereoacuity was recorded (in each step of anisometropia induction). The statistical analysis performed by paired t-test. Conclusion: Producing of anisometropia to 1.25 dipter does not significantly affects stereopsis, but anisometropia more than 1.75 diopter can significantly reduce stereoacuity. Also reduction of visual acuity to 20/40 doesn’t create statistically significant decrease in stereopsis but reduction of visual acuity to 2/100 or less, significantly effects stereopsis.
