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Capsular Outcomes Differ with Capsulorhexis Sizes after Pediatric Cataract Surgery: A Randomized Controlled Trial.
Haotian Lin1, Xuhua Tan1, Zhuoling Lin1
1The State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong, 510060, People´s Republic of China.
Scientific Reports
|November 6, 2015
Summary
Choosing the right capsulorhexis size is key for secondary lens implants. A 4.0-5.0 mm diameter may offer the best capsular outcomes, balancing capsule contraction and opacity.
Area of Science:
- Ophthalmology
- Intraocular Lens Implantation
- Capsular Outcomes
Background:
- Capsular outcomes are critical for secondary in-the-bag intraocular lens (IOL) implantation.
- Anterior and posterior capsulorhexis opening (ACO/PCO) size influences these outcomes.
Purpose of the Study:
- To compare capsular outcomes with different primary capsulorhexis sizes.
- To determine the optimal capsulorhexis diameter for secondary IOL implantation.
Main Methods:
- Thirty-eight patients (45 eyes) were randomized into three groups based on anterior capsulorhexis diameter (3.0-3.9mm, 4.0-5.0mm, 5.1-6.0mm).
- Primary outcomes included areas of ACO/PCO and posterior capsule opening opacity (PCOO).
- Secondary outcome was the incidence of visual axis opacity (VAO), measured at follow-up visits.
Main Results:
- The mean ACO area decreased over time, while PCO enlarged.
- Group A (3.0-3.9mm) showed the highest anterior capsule constriction and percentage reduction.
- Group C (5.1-6.0mm) exhibited the largest posterior capsule enlargement.
- Group A had the highest PCOO and VAO incidence, while Group C had the lowest.
Conclusions:
- A capsulorhexis diameter of 4.0-5.0mm appears optimal.
- This size balances moderate ACO contraction, moderate PCO enlargement, and lower PCOO and VAO rates.
- This suggests improved capsular outcomes for secondary IOL procedures.
