구면렌즈로 유발된 부등상시가 양안시 기능에 미치는 영향

Abstract

Purpose: To study the effect of spherical lens induced aniseikonia on stereopsis and fusion Methods: One hundred subjects, with normal binocular function without any ophthalmic disease or surgery history, were examined. The aniseikonia was induced with spherical lenses in I diopter (D) stepwise manner from -2 D to +2 D. The amount of aniseikonia was measured by Awaya´s New Aniseikonia Test. Stereopsis and fusion were determined with Titmus Stereo Test and fusion card of major amblyoscope respectively. Results: As the amount of aniseikonia was increased, the stereopsis and fusion were decreased. The change was statistically significant (ANOVA, pConclusions: Our study suggests that binocular function can be disturbed by experimentally induced aniseikonia in normal subjects and that stereoacuities and fusional amplitude can be decreased as the degree of aniseikonia becomes larger.