Rapid Assessment of Avoidable Blindness and Willingness to Pay for Cataract Surgery in Tribal Region of Surat District of Gujarat State, India.

Ophthalmic Epidemiology
Rohan A ChariwalaUday R Gajiwala

Abstract

To estimate prevalence and causes of avoidable blindness among people ≥50 years and to assess willingness to pay (WTP) for cataract surgery in tribal region of south Gujarat, India. A cross-sectional population based survey was conducted with 44 randomly selected clusters each having 50 people aged ≥50 years selected by probability proportional to size of sampling. Adults identified with cataract causing visual loss (<6/18) in any eye were interviewed to assess their WTP for surgery. Total of 2137 examined out of 2200 people enumerated (response rate 97.1%). The prevalence of blindness (Presenting Visual Acuity (PVA)<3/60 in better eye) was 2.23% (95% CI: 2.95%-1.51%). Cataract was main cause of blindness (67.3%) followed by corneal scarring (8.2%). Major barrier to cataract surgery cited by bilaterally blind people was lack of escort to the surgical facility (34.3%). Cataract surgical coverage (CSC) was 84.9% (eyes) and 92% (persons). Of the 492 people interviewed to assess WTP for their surgery, only 36.4% people were willing to pay. The tribal population has a high poverty profile in India. Within this group, cataract remains the main treatable cause of blindness despite a high CSC. Assessment of barriers suggested that a we...Continue Reading

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