Menapace R
First University Eye Hospital, Vienna, Austria.
J Cataract Refract Surg. 1995 May;21(3):339-47. doi: 10.1016/s0886-3350(13)80144-7.
Thirty-five PhacoFlex foldable open-loop lenses with high-refractive silicone optics were evaluated. All lenses were implanted using a folding forceps and were fixated in the bag. Mean follow-up was 14 months. With adequate forceps, the lens may be inserted through a 3.2 mm incision, using a 3 mm long self-sealing sclerocorneal tunnel. With a well-centered 4 mm to 5 mm capsulorhexis opening, centration was very satisfactory. Moderate decentration occurred in two cases, one from a small, heavily shrinking capsulorhexis and the other from a poorly shaped capsulorhexis that captured the optic along its edge. Except in one case of combined cataract and filtering surgery, all optics were at a pronounced distance from the iris. Consequently, signs of iris chafing or iridocapsular synechias and cellular invasion were not seen. The optic typically exhibited a slight bluish tint and minute granular inclusions without clinical significance. Neither discoloration nor haze was present. Best visual acuity was 20/25 or better in all cases. The small wound required for insertion makes the PhacoFlex especially appropriate for clear corneal incision surgery. Attempts are being made to minimize the grainy appearance of the optic. Increasing the rigidity of the loops may be advantageous.
对35枚采用高折射硅酮光学部件的PhacoFlex可折叠开环人工晶状体进行了评估。所有晶状体均使用折叠镊植入并固定于囊袋内。平均随访时间为14个月。使用合适的镊子,晶状体可通过3.2mm切口,经3mm长的自闭性巩膜隧道插入。在连续环形撕囊口为4mm至5mm且居中良好的情况下,晶状体的居中情况非常令人满意。有2例发生了中度偏心,1例是由于连续环形撕囊口过小且严重收缩,另1例是由于连续环形撕囊口形状不佳,致使晶状体光学部边缘被包裹。除1例合并白内障和滤过手术的病例外,所有光学部均与虹膜保持明显距离。因此,未观察到虹膜擦伤、虹膜后粘连或细胞侵入的迹象。光学部通常呈现轻微的蓝色调及微小的颗粒状内含物,无临床意义。未出现变色或混浊。所有病例的最佳视力均为20/25或更佳。插入所需的小切口使得PhacoFlex特别适用于透明角膜切口手术。目前正在努力减少光学部的颗粒状外观。增加袢的硬度可能有益。