Related Experiment Video
Updated: Aug 4, 2026
04:59
Rotating the Intraocular Lens to Prevent Posterior Capsular Opacification in Cataract Surgeries
Published on: July 7, 2023
The madurai intraocular lens study IV: posterior capsule opacification
N V Prajna1, L B Ellwein, S Selvaraj
1Aravind Eye Hospitals and Postgraduate Institute of Ophthalmology, Madurai, India.
American Journal of Ophthalmology
|October 6, 2000
Summary
The 4-year incidence of posterior capsule opacification after cataract surgery was 13.1%. This finding suggests a lower need for laser capsulotomy than previously reported for extracapsular cataract extraction with posterior chamber intraocular lens implantation.
Area of Science:
- Ophthalmology
- Surgical Outcomes
- Intraocular Lenses
Background:
- Posterior capsule opacification (PCO) is a common complication after cataract surgery.
- Extracapsular cataract extraction (ECCE) with posterior chamber intraocular lens (PCIOL) implantation is a standard procedure for mature cataracts.
Purpose of the Study:
- To determine the cumulative incidence of posterior capsule opacification (PCO) four years post-surgery.
- To assess PCO rates in patients who underwent extracapsular cataract extraction with posterior chamber intraocular lens implantation.
Main Methods:
- The Madurai Intraocular Lens Study followed 1,700 patients undergoing ECCE with PCIOL.
- A subset of 400 patients was randomly selected for a 4-year re-examination.
- Ophthalmologists graded posterior capsule opacification using a standardized scale (I-III).
Main Results:
- The 4-year incidence of grade II or III posterior capsule opacification was 13.1% (95% CI, 9.7% to 17.3%).
- This rate included eyes previously treated with laser capsulotomy.
- Increased age was associated with a decreased risk of PCO (OR, 0.96; 95% CI, 0.92 to 1.00).
Conclusions:
- The incidence of significant posterior capsule opacification requiring intervention may be lower than previously estimated.
- The shift towards ECCE with PCIOL may reduce the subsequent need for laser capsulotomy.
- Findings are relevant for managing patient expectations and planning follow-up care.
Related Concept Videos
01:25Glaucoma: Overview
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
01:27Open Angle Glaucoma: Treatment
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Drugs such as carbonic anhydrase inhibitors, α2- and...
01:28Angle Closure Glaucoma: Treatment
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...