Anisometropia magnitude and visual deficits in previously untreated anisometropic amblyopia

Abstract

AIM:To assess the quantitative association between anisometropia magnitude and the losses of resolution and contrast sensitivity; and to exemplify how the function of fusion and stereopsis vary with anisometropia magnitude (AM) in previously untreated anisometropic amblyopes.METHODS:A total of 57 patients with previously untreated anisometropic amblyopia without strabismus (range:8-35 years), were measured refractive error, best corrected visual acuity (BCVA), fusion and stereopsis, and 48 patients have completed contrast sensitivity function test. AM was determined by dioptric vector addition model, and the amblyopia depth was determined by the difference of BCVA in logMAR units between the amblyopic and fellow eyes.RESULTS: AM was significantly correlated with both amblyopia depth (Pearson R=0.728, PPPCONCLUSION: In the patients with previously untreated anisometropia amblyopia, higher degree of anisometropia is significantly associated with deeper amblyopia, worse contrast sensitivity, fusion and stereopsis functions.

Keywords

• anisometropia
• amblyopia
• area under the log contrast senility function
• fusion
• stereopsis