玻璃体混浊患者的激光干涉视力测定

Laser Interferometry Measuring in Eyes with Vetrious Opaque

对34例明显玻璃体混浊拟行玻璃体切割手术的患者进行激光干涉视力测定，以预测术后视力的恢复程度。其中3例术前激光干涉视力为无红光感，术后视力恢复分别为0．05，0．04和FC；25例术前激光视力为红光感，术后视力恢复为FC至0．5不等；6例能够辨别条纹的玻璃体混浊患者，5例术后恢复视力基本与激光干涉视力相符。认为：玻璃体混浊相对较轻患者能够辨别条纹，术前测定激光干涉视力有一定价值；严重玻璃体混浊患者，激光不能在视网膜上形成干涉条纹，对视力的预测会出现假阴性结果，应予正确认识。

This researsh had done the laser interferometry to 34 eyes with vetrious opaque, in orde to predict the postoperative visual acuity. Three of them had non red light perception at preoperation, however recoveried to 0. 05, 0. 04 and FC respectively. 25 eyes had red light perception at preoperation,and had postoperative visual acuity from FC to 0. 5. Six patients could distinguish interference fringes,the preoperative laser interferometry was consistent with postoperation visual acuity in five patients. The conclusion is that preoperative laser interferometry has certain value for patients with mildly opaque who can distinguish interference fringes,however false-negtive outcome may be abtained in patients with vetrious very opaque, because the interference frings can't be formed on retina,so we must assess the results rightly.