Abstract
目的 应用计算机图像分析软件评价后发性白内障(posterior capsule opacification,PCO)的形态,以探讨不同类型、部位PCO对最佳矫正视力(best corrected visual acuity,BCVA)、对比敏感度(contrast sensitivity,CS)和眩光敏感度glare sensitivity,GS)的影响.方法 收集拟行激光后囊切开术的PCO患者61例(67眼),充分散瞳,行详细眼科检查后,应用裂隙灯照相获取PCO后照法照片,使用PCO计算机分析软件(FOCOman软件)对其进行形态学分析.同时分别测量所有患者激光后囊切开术术前及术后1周BCVA、CS、GS.分析不同类型、不同部位PCO对BCVA、CS、GS的影响.结果 珍珠型PCO的BCVA、各频段CS和CS均低于纤维型PCO,且两者之间的差异有统计学意义(P<0.05).其中,4.0 mm珍珠型PCO在低、中频段CS和中频段GS均低于中央2.0 mm珍珠型PCO,差异有统计学意义(P<0.05);中央2.0 mm纤维型PCO在中、高频段CS和低、中频段GS均低于中央4.0 mm纤维型PCO,差异有统计学意义(P<0.05).中央2.0 mm珍珠型PCO时BCVA的影响最为显著:中央4.0 mm珍珠型PC0对CS和GS的影响最为显著.结论 珍珠型PCO对BCVA、各频段CS和GS的彩响大于纤维型PCO.珍珠型PCO在中央4.0 mm区对视功能的影响大于中央2.0 mm区:纤维型PCO在中央2.0 mm区对视功能的影响大于中央4.0 mm区。
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