Sarah Polack|Hannah Kuper|Wanjiku Mathenge|Astrid E. Fletcher|Allen Foster
Cataract visual impairment and quality of life in a Kenyan population
University of London|London School of Hygiene & Tropical Medicine|University of London|London School of Hygiene & Tropical Medicine|London School of Hygiene & Tropical Medicine|University of London|University of London|London School of Hygiene & Tropical Medicine
aims evaluate world health organization prevention blindness deafness 20item visual functioning questionnaire whopbd vf20 visionrelated quality life scale describe relationship cataract visual impairment visionand generic healthrelated quality life people 50 years age nakuru district kenyamethods whopbd vf20 pilot tested modified196 patients visual impairment cataract 128 populationbased controls without visual impairment cataract identified districtwide surveyadditional cases identified case findingvisionand healthrelated quality life assessed using whopbd vf20 scale euroqol generic health index european quality life questionnaire eq5d respectivelywhopbd vf20 evaluated using standard psychometric tests including factor analysis determine item grouping summary scoresresults modified whopbd vf20 demonstrated good psychometric propertiestwo subscales general functioning psychosocial one overall eyesightrating item appropriate dataincreased severity visual impairment cases associated worsening general functioning psychosocial overall eyesight scores p trend 0001cases likely report problems eq5d descriptive dimensions controls p0001and among cases increased severity visual impairment associated worsening selfrated health score conclusionthe modified whopbd vf20 valid reliable scale assess visionrelated quality life associated cataract visual impairment kenyan populationthe association healthrelated quality life visual impairment reflects wider implications cataract health wellbeing beyond visual acuity alone