Table 3

Causes of blindness in areas of different endemicity of onchocerciasis

CauseHyperendemic areas
(No (%))
Mesoendemic areas
(No (%))
Hypoendemic areas
(No (%))
Onchocerciasis92 (80.7)4 (28.6)2 (33.3)
Cataract15 (13..2)6 (42.9)1 (16.7)
Trachoma4 (3.5)2 (14.3)0
Glaucoma2 (1.7)1 (7.1)0
Optic atrophy 01 (7.1)1 (16.7)
HTEM1 (0.9)00
Measles/xerophthalmia001 (16.7)
Micro/anophthalmos001 (16.7)
Total No blind114146
  • Optic atrophy of unknown origin.

  • HTEM = harmful traditional eye medicine.