J Korean Ophthalmol Soc.  2000 Oct;41(10):2198-2204.

Quantitative Analysis of Anterior Capsule Opening after PMMA, Silicone and Acrylic Intraocular Lens Implantation

• Cheon HJ
• Baek TM
• Lee KH

Abstract

To quantify the periodic changes in the area of anterior capsule opening after cataract surgery and to compare any difference between polymethylmethacrylate (PMMA), silicone and soft acrylic IOLs, we prospectively studied 442 patients (465 eyes)who were operated from September 1997 to November 1999 at our hospital.All patients had standardized phacoemulsification, continuous curvilinear capsulorhexis, and intraocular lens implantation performed by the same surgeon.Patients were randomized into three groups based on the type of intraocular lens.The area of anterior capsule opening was quantitated using the Anterior Eye Segment Analysis System (EAS-1000), and examinations were performed at 1 week and 1, 3 and 6 months after surgery.The mean anterior capsular opening area at 1, 3 and 6 months postoperatively was smaller than that of 1 week in all 3 groups (P<.05)and the mean percentage of reduction in the PMMA and soft acrylic intraocular lens groups was significantly smaller than that in the silicone intraocular lens group at 1, 3 and 6 months after surgery (P<.05).In the silicone group, the contraction of the anterior capsule opening was greater than either PMMA or soft acrylic intraocular lens groups.Further studies will be needed for the evaluation of clinical application of silicone and soft acrylic intraocular lens.

Keyword

Anterior capsule opening area; Anterior eye segment analysis system (EAS-1000); PMMA, Silicone; Soft Acrylic intraocular lens

MeSH Terms

Anterior Eye Segment
Capsulorhexis
Cataract
Humans
Lens Implantation, Intraocular*
Lenses, Intraocular*
Phacoemulsification
Polymethyl Methacrylate*
Prospective Studies
Silicones*
Polymethyl Methacrylate
Silicones