Kent D G, Gross K A
Ophthalmology Registrar, Waikato Public Hospital, Hamilton, New Zealand.
Aust N Z J Ophthalmol. 1990 Aug;18(3):329-34. doi: 10.1111/j.1442-9071.1990.tb00629.x.
The preliminary results are presented of a prospective trial of a new 'disc' intraocular lens. (Pharmacia Model CD801A). Forty-four lenses were implanted into the capsular bag using an intercapsular cataract extraction technique. The lens is a one-piece all-polymethylmethacrylate (PMMA) lens with a 6 mm biconvex optic. The optic sits within a 9 mm diameter flexible PMMA ring. Two haptic stalks link this flexible haptic ring to the optic. The lens was assessed for its ease of insertion, its rate of decentration, the incidence of posterior capsular opacity and its effects on pupillary function. Results of the trial at three months follow-up are presented. They show that the lens is easy to insert into the capsular bag even through small pupils. It is very easy to dial, placing no stress on the bag when doing so. The incidence of decentration of 1 mm or greater was 5%, and the incidence of posterior capsular fibrosis at three months was 2%. As predicted, the lens sits well back in the eye, clear of the pupil.
本文展示了一项针对新型“盘状”人工晶状体（法玛西亚CD801A型号）的前瞻性试验的初步结果。采用囊内白内障摘除技术将44枚晶状体植入囊袋内。该晶状体为一体式全聚甲基丙烯酸甲酯（PMMA）晶状体，具有6毫米双凸光学部。光学部位于直径9毫米的柔性PMMA环内。两条襻柄将这个柔性襻环与光学部相连。对该晶状体的插入难易程度、偏心率、后囊膜混浊发生率及其对瞳孔功能的影响进行了评估。文中给出了三个月随访期的试验结果。结果显示，即使通过小瞳孔，该晶状体也很容易插入囊袋。它非常容易调位，调位时对囊袋没有压力。偏心1毫米或更大的发生率为5%，三个月时后囊膜纤维化的发生率为2%。正如预期的那样，该晶状体在眼内位置靠后，远离瞳孔。
