共同性斜视双眼视觉的临床研究

Clinical study on binocular single vision of comitant strabismus

目的 观察恒定性非调节性内斜、恒定性外斜和间歇性外斜患者手术前后对双眼视觉的影响。方法 将5 2例 7～ 42岁符合标准的共同性斜视患者分为 3组 :恒定性非调节性内斜组 ,恒定性外斜组和间歇性外斜组。同视机测定远双眼视觉级别 ,《颜少明立体视觉检查图》测定近立体视锐度。观察术前、术后 5d、1个月、3～ 6个月的斜视度、远双眼视觉、近立体视锐度变化。结果 3组斜视手术前后对远双眼视觉的影响差异无显著性 (P >0 0 5 ) ;恒定性非调节性内斜组与恒定性外斜组近立体视觉差异无显著性 (P >0 0 5 ) ;间歇性外斜组术前近立体视觉损害较其他两组轻 (P<0 0 5 )。结论 恒定性非调节性内斜、恒定性外斜对双眼视觉的影响一致。间歇性外斜组对远双眼视觉的影响与恒定性非调节性内斜组和恒定性外斜组一致 。

Objective To observe the effect of comitant strabismus on binocular single vision(BSV). Methods 52 patients were divided into three groups: constant non-accommodative esotropia, constant extropia, intermittent extropia. Alignment, the grade of distance BSV and near stereoacuity were examined before operation and 5 days, 1 month and 3～6 months after operation. Results There was no significant difference in the distance BSV among the three groups( P >0 05). There was no significant difference in near stereoacuity between constant non-accommodative esotropia and constant extropia( P >0 05). The loss of near stereoacuity of intermittent extropia was less than that of constant non-accommodative esotropia and constant extropia( P <0 05). Conclusion Constant non-accommodative esotropia and constant extropia produces the same effect on BSV. The effect of intermittent extropia on distance BSV is the same as that of constant non-accommodative esotropia and constant extropia; destruction of near stereoacuity of intermittent extropia is milder than that of other two groups.