CL Maser, M Martin-Baranera, et al (Barcelona, Spain)
Survey of blindness and visual impairment in Bioko, Equatorial Guinea
BJO, March 2002,86(3), pg. 257-260

This study estimated the prevalence of blindness and its main aetiologies in Bioko, an onchocerciasis endemic zone of Equatorial Guinea.

3218 subjects were screened – mean age 34.1 years. Overall prevalence of blindness was 3.2%. Unilateral blindness was present in 4.2%. Main causes of blindness were cataracts (61.3%), macular affection (25.3%), optic atrophy (16%) and glaucoma (13.3%). Ocular onchocerciasis was very uncommon in an area of high endemicity.

CL Maser, M Martin-Baranera, et al (Barcelona, Spain)Survey of blindness and visual impairment in Bioko, Equatorial GuineaBJO, March 2002,86(3), pg. 257-260This study estimated the prevalence of blindness and its main aetiologies in Bioko, an onchocerciasis endemic zone of Equatorial Guinea.3218 subjects were screened – mean age 34.1 years. Overall prevalence of blindness was 3.2%. Unilateral blindness was present in 4.2%. Main causes of blindness were cataracts (61.3%), macular affection (25.3%), optic atrophy (16%) and glaucoma (13.3%). Ocular onchocerciasis was very uncommon in an area of high endemicity.