屈光参差性弱视儿童的双眼视功能

目的观察屈光参差性弱视儿童的双眼视功能以及屈光参差中立体视和融像之间的关系。方法选择隐性斜视小于4△的5～12岁屈光参差儿童46例。对以上所选病例．测定最佳矫正视力、屈光状态及矫正后TNO立体视及Worth四点、Bagolini线状镜、4D三棱镜检查。并对测量数据进行统计学分析。结果Bagolini线状镜检查中所有患者均有融像功能：Worth四点检查中近距39例有融像．远距22例患者有融像：TNO立体视检查中37例视锐度值下降．其中19例无立体视。4D三棱镜检查中34例有中心抑制暗点．融像功能减弱与立体视锐度下降、屈光参差程度及弱视程度有关，弱视与立体视的相关性大于屈光参差与立体视的相关性。立体视锐度与融像能力的强弱有关。结论双眼视功能随着屈光参差程度和弱视程度的增加而下降。融像功能检查中．Bagolini线状镜提示融合状态，Worth四点提示融合强度。中心抑制暗点可能是导致立体视和双眼视功能下降的原因。

Observation on binocular vision of anisometropic amblyopia of children

Objective To observe biocular vision of anisometropic amblyopia chindren and the relationship between stereopsis and fusion in anisometropia. Methods Fourty-six children with anisometropic amblyopia were selected. The best corrected visual acuity and refraction of each patient was recorded. Patients, corrected with spectacles, were evaluated using TNO stereotest, Worth four-dot test, Bagolini glasses and 4-diopter （D） prism test. These data evaluated by statistic analysis. Results All patients indicated fusion by the Bagolini glasses, 39 patients indicated fusion by the near Worth four-dot test, 22 patients indicated fusion by the distant Worth four-dot test （WFDT）. On the TNO test, stereoaeuity levels were reduced in 37 patients and absent in 19 patients. On the 4 D prism test, 34 patients have foveal suppression scotoma. Fusion becomes weak and stereoacuity decreases is related to the degree of anisometropia and the depth of amblyopia. The correlation between the amblyopia and stereoacuity is stronger than the correlation between anisometropia and stereoacuity. Stereoacuity is related to the strength of fusion. Conclusion Binocular function declined with increasing leves of anisometropia and amblyopia, Bagolini glasses test present the state of fusion and Worth four-dot test present the power of fusion. Foveal suppression scotoma may cause the decline in stereopsis and binocular function.