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To determine the prevalence of blindness and of cataract blindness in persons 50 years of age or older in Piura and Tumbes, which are two departments in northern Peru, and to describe the coverage and quality of cataract surgery services in that area, and the barriers that prevent access to those services.

Ceguera por catarata en personas mayores de 50 años en una zona semirrural del norte del Perú