Rice T A, De Bustros S, Michels R G, Thompson J T, Debanne S M, Rowland D Y
Ophthalmology. 1986 May;93(5):602-10. doi: 10.1016/s0161-6420(86)33689-3.
A retrospective multivariate analysis of 264 consecutive cases of vitrectomy for removal of epiretinal membranes of the macula was performed. Two main preoperative prognostic factors were identified that were associated with the visual outcome of surgery: (1) the preoperative visual acuity, and (2) the duration of blurred vision before surgery. Discriminant functions constructed using these two factors allowed correct classification of eyes into an outcome group with good visual acuity with a 69% accuracy, and an 80% accuracy in classifying eyes into a group showing significant improvement in the level of visual acuity. Eyes that began with vision better than 20/100 tended to have slightly better postoperative visions than eyes with poorer preoperative visual acuity. However, eyes with worse preoperative vision tended to improve the greatest amount after surgery. Eyes with a longer history of blurred vision had poorer visual acuity after surgery and also less improvement in vision. Other statistically significant prognostic factors were identified; however, they did not appreciably improve the accuracy of the discriminant function in predicting visual outcome.
对连续264例因黄斑视网膜前膜而接受玻璃体切除术的病例进行了回顾性多变量分析。确定了两个主要的术前预后因素，它们与手术的视觉结果相关：（1）术前视力，以及（2）手术前视力模糊的持续时间。使用这两个因素构建的判别函数能够将眼睛正确分类到视力良好的结果组，准确率为69%，将眼睛分类到视力水平有显著改善的组的准确率为80%。术前视力优于20/100的眼睛术后视力往往略好于术前视力较差的眼睛。然而，术前视力较差的眼睛术后改善幅度往往最大。视力模糊病史较长的眼睛术后视力较差，视力改善也较少。还确定了其他具有统计学意义的预后因素；然而，它们并没有明显提高判别函数预测视觉结果的准确性。
