Analysis of the stereo visual function and the refractive status in refraction related amblyopic children

Abstract

Objective To analyze the damage of stereo visual function and the refractive status in refraction related amblyopic children. Methods Case control study. One hundred and thirty-seven refraction related amblyopic children were collected in Renmin Hospital of Wuhan University. According to the result of retinoscopy after mydriasis in the first visit, the patients were divided into two groups: Group A (ametropia group, 81 cases) and Group B (Anisometropia group, 56 cases). Synoptophore, Yan’s and Titmus stereo test was used to assess stereo visual function. Results Among 137 ametmpic and anisometmpic amblyopic children, 116 eyes were medium amblyopia (63.9%); compared to group B, less severe amblyopia and more medium amblyopia children in group A (all P<0.05); compared to group B, the proportion of hyperopia was greater and astigmatism was relatively small (all P<0.05); the proportion of abnormal simultaneous vision and fusion faculty was greater; there were insignificant differences of central stereopsis and surrounding stereopsis among the two groups; there were more abnormal macular stereoscopic children and more stereovision blind in group A. Children of refraction related amblyopic mainly with hyperopia (69.95%). Conclusions Both ametropia and anisometropia do harm to the stereo visual function of children, however, the anisometropia particularly. Hyperopia is a main influencing factor in refraction related amblyopic children. Key words: Amblyopia; Stereo vision; Ametropia; Anisometropia; Referction