Sterling S, Wood T O
J Cataract Refract Surg. 1986 Nov;12(6):655-7. doi: 10.1016/s0886-3350(86)80080-3.
A consecutive series of 248 eyes undergoing extracapsular cataract surgery and posterior chamber lens implantation were evaluated. One hundred eight eyes had the implant placed with the convex side posterior and 140 with the convex side anterior. The incidence of capsulotomy required in the convex posterior group was significantly less than in the convex anterior group, 17.6% versus 29.3% (P value less than 0.05). The type of posterior capsule opacification in the two groups was also different. In the convex posterior group, a smooth fibrous type of capsular opacification predominated; in the convex anterior group, epithelial proliferation and pearl formation as well as wrinkling of the capsule frequently occurred. The difference in opacification was reflected in the preoperative visual acuity: convex posterior 20/80, convex anterior less than 20/200 (P less than 0.05).
对连续248只接受囊外白内障手术和后房型人工晶状体植入术的眼睛进行了评估。108只眼睛植入的人工晶状体凸面在后，140只眼睛植入的人工晶状体凸面在前。凸面在后组所需的囊切开术发生率显著低于凸面在前组，分别为17.6%和29.3%（P值小于0.05）。两组后囊膜混浊的类型也不同。在凸面在后组，以光滑纤维型囊膜混浊为主；在凸面在前组，上皮增殖、珍珠样形成以及囊膜皱缩经常发生。混浊的差异反映在术前视力上：凸面在后组为20/80，凸面在前组低于20/200（P小于0.05）。
