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目的:探讨游标高敏视力预测玻璃体混浊视功能的临床应用价值。方法:采用自行研究设计的游标高敏视力检查系统软件,对14例（14眼）玻璃体混浊患者手术前进行游标高敏视力检查,受检者判断计算机显示屏上活动光标与固定光标的相对位置关系,按要求移动轨迹球调整这些光标之间的位置关系,通过计算分析活动光标和固定光标位置之偏差,得出平均阈值及其变异度;将检查值与术后视力结果进行对比、统计、分析。结果:手术前、后游标视力阈值配对t检验,差异无显著性（t=0.52,P=0.612）,其相关系数为0.85（P<0.01）;手术前、后游标视力阈值变异度配对t检验,差异也无显著性（t=0.431,P=0.674）,其相关系数为0.97（P<0.01）。术前游标视力阈值与术后视力的相关系数为-0.74（P <0.01）;术前游标高敏视力阈值变异度与术后视力的相关系数为-0.95（P<0.01）。根据术前游标视力阈值及变异度建立的术后视力线性回归预测方程为:Y=0.943-0.000116THv-0.00193SDv,预测方程的复相关系数为0.95。结论:游标高敏视力在玻璃体混浊手术前后具有很好的一致性,能抵抗混浊玻璃体的干扰,是术前预测玻璃体混浊视功能的敏感指标之一。
Objective: To investigate the clinical value of vernier hysteroscopy in predicting vitreous opacity. Methods: Fifteen 14 patients (14 eyes) with vitreous opacity were examined with high sensitivity and visual acuity before surgery by the self-designed cursor high-sensitivity visual acuity examination system. The subjects judged the relative position of the active cursor and the fixed cursor on the computer screen, Move the trackball as required to adjust the position relationship between these cursors. By calculating and analyzing the deviation of the active cursor and the fixed cursor position, the average threshold and the variation degree are obtained; compare the results with the postoperative visual acuity results, and make statistics and analysis. Results: There was no significant difference between the two groups (t = 0.52, P = 0.612), and the correlation coefficient was 0.85 (P <0.01). The variance of visual acuity before and after the operation was paired with t test , The difference was not significant (t = 0.431, P = 0.674), the correlation coefficient was 0.97 (P <0.01). The correlation coefficient between preoperative visual acuity threshold and postoperative visual acuity was -0.74 (P <0.01). The correlation coefficient between preoperative visual acuity threshold and postoperative visual acuity was -0.95 (P <0.01). According to the preoperative visual acuity threshold and the degree of variability, the linear regression equation of postoperative visual acuity was Y = 0.943-0.000116THv-0.00193SDv. The complex correlation coefficient of the predictive equation was 0.95. CONCLUSION: Cursor hypersensitivity has good consistency before and after vitreous opacification, and it can resist the interference of turbid vitreous body. It is one of the sensitive indexes for predicting vitreous opacification function before operation.