Prevalence of cataract surgery and postoperative visual outcome in rural central India: Central India Eye and Medical Study

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• 作者：Vinay Nangia FRCS ; MD  ; ;   ; ^{nagpursuraj@gmail.com} ; Jost B. Jonas MD ; Rajesh Gupta MD ; Anshu Khare MD ; Ajit Sinha MD[Author vitae]
• 刊名：Journal of Cataract and Refractive Surgery
• 出版年：2011
• 出版时间：November 2011
• 年：2011
• 卷：37
• 期：11
• 页码：1932-1938
• 全文大小：137 K

文摘

Purpose

To determine the prevalence of cataract surgery and the postoperative visual outcomes in rural central India.

Setting

Villages in rural central India.

Design

Cohort study.

Methods

The population-based Central India Eye and Medical Study examined the prevalence of surgical pseudophakia/aphakia, the postoperative visual acuity, and the reasons for decreased postoperative vision in subjects aged 30+ in rural central India. Visual impairment was defined as (1) presenting visual acuity worse than 6/18 or (2) corrected distance visual acuity (CDVA) worse than 6/18.

Results

Of the 9392 eyes (99.7 % ) of 4711 subjects with available data on the lens status, 318 eyes (3.4 % ) (234 patients, 129 women) had had cataract surgery (5.0 % ¡À 0.3 % ). Cataract surgery was significantly associated with age (P<.001), female sex (P=.008), shorter axial length (P<.001), and diabetes mellitus (P<.001). The prevalence of postoperative presenting visual impairment was 63 % (201/318 eyes) and of postoperative CDVA impairment, 36 % (117/318 eyes). The major cause of the former was incorrect intraocular lens (IOL) power (42 % ); the major causes of the latter were posterior capsule opacification (24 % ), surgical complications (21 % ), age-related macular degeneration (10.3 % ), other macular disorders (4.3 % ), corneal opacities (3.4 % ), and glaucoma (2.0 % ). Surgical complications were significantly more common in the aphakic group than in the pseudophakic group (46.4 % versus 2.0 % ; P<.001).

Conclusions

Approximately 5 % of the central India population aged 30 years or older had had cataract surgery. Postoperative visual impairment was present in 2 of 3 eyes. The major reasons were incorrect IOL power and surgical complications. Improved IOL power calculations and improved surgical techniques may markedly improve postoperative outcome.

Financial Disclosure

No author has a financial or proprietary interest in any material or method mentioned.