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Conversion from phacoemulsification to extracapsular cataract extraction: incidence, risk factors, and visual outcome
T Dada1, N Sharma, R B Vajpayee
1Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.
Journal of Cataract and Refractive Surgery
|November 18, 1998
Summary
Phacoemulsification conversion to ECCE occurred in 3.7% of cases due to complications like small pupils or capsule tears. Most patients achieved good vision after conversion, highlighting the importance of prompt management.
Area of Science:
- Ophthalmology
- Surgical Techniques
Background:
- Phacoemulsification is a common cataract surgery technique.
- Conversion to extracapsular cataract extraction (ECCE) may be necessary during phacoemulsification.
Purpose of the Study:
- To determine the incidence, risk factors, and visual outcomes of converting phacoemulsification to ECCE.
- To identify common reasons for intraoperative conversion during cataract surgery.
Main Methods:
- Retrospective analysis of 540 eyes undergoing clear corneal phacoemulsification.
- Evaluation of factors leading to conversion, endothelial cell loss, and visual results.
Main Results:
- Conversion to ECCE was required in 3.7% of cases (20 eyes).
- Common reasons included pupillary miosis, posterior capsule rupture, and prolonged phacoemulsification time.
- Mean endothelial cell loss was 11.06%; 90% achieved visual acuity of 20/40 or better.
Conclusions:
- Intraoperative pupillary miosis, posterior capsule rupture, and hard cataracts are key risk factors for conversion.
- Timely conversion to ECCE, with proper preparation and complication recognition, leads to good visual outcomes.