Mohammed M Abdull|Sudhakar Selvaraj|Gudlavalleti Venkata Satyanarayana Murthy|Clare Gilbert|Tafida Abubakar|Christian Ezelum|Mansur Rabiu
Causes of Blindness and Visual Impairment in Nigeria: The Nigeria National Blindness and Visual Impairment Survey
Bauchi State University|London School of Hygiene & Tropical Medicine|London School of Hygiene & Tropical Medicine|London School of Hygiene & Tropical Medicine|National Eye Centre
determine causes blindness visual impairment among adults aged or40 yearsmultistage stratified cluster random sampling probability proportional size procedures used identify nationally representative sample 15027 persons or40 years age distance vision measured reduced logmar tumbling echart clinical examination included basic eye examination subjects detailed examination presenting vision 612 either eye cause vision loss assigned subjects presenting vision 612 eyeof 15122 persons aged or40 years enumerated 13599 899 examined 84 blindness avoidable uncorrected refractive errors responsible 571 moderate 618660 visual impairment cataract 43 commonest cause blindness 360 prevalence cataractrelated blindness 18 95 ci 157205 glaucomarelated blindness 07 95 ci 055088 increasing age associated increasing prevalence major blinding conditions females illiterate persons residents north east geopolitical zone significantly higher odds cataractinduced blindness severe visual impairmentthe high proportion avoidable blindness half attributable cataract alone uncorrected refractive errors responsible 57 moderate visual impairment means appropriate accessible refraction surgical services need provided priority attention given number blind severely visually impaired adults nigeria increase 40 next decade