Table 1

Population prevalence (%) of main eye disorders

Eye disorderNo of cases in sampleEstimated population prevalence (95% CI)*Estimated No of cases in population of 13 371 (95% CI)*
Cataract (lens opacity; one or both eyes; visual acuity <6/12)45130 (25.1 to 35.3)4037 (3351 to 4723)
Had cataract surgery (one or both eyes)16210 (8.5 to 12.4)1399 (1141 to 1657)
Age related macular degeneration (visual acuity <6/12)1338 (5.8 to 10.8)1108 (776 to 1440)
Glaucoma (chronic open angle)473 (2.3 to 3.6)395 (306 to 485)
Suspected glaucoma1097 (5.4 to 8.4)924 (719 to 1128)
Refractive error causing visual impairment (one or both eyes; visual acuity <6/12)1369 (7.0 to 11.4)1228 (935 to 1521)
  • *Weighted average of cluster specific prevalence measures; calculations take into account the two stage cluster random sampling design.