Impact of unilateral and bilateral vision loss on quality of life

Aim: To investigate whether unilateral vision loss reduced any aspects of quality of life in comparison with normal vision and to compare its impact with that of bilateral vision loss. Methods: This study used cluster stratified random sample of 3271 urban participants recruited between 1992 and 1994 for the Melbourne Visual Impairment Project. All predictors and outcomes were from the 5 year follow up examinations conducted in 1997-9. Results: There were 2530 participants who attended the follow up survey and had measurement of presenting visual acuity. Both unilateral and bilateral vision loss were significantly associated with increased odds of having problems in visual functions including reading the telephone book, newspaper, watching television, and seeing faces. Non-correctable by refraction unilateral vision loss increased the odds of falling when away from home (OR=2.86, 95% Cl 1.16 to 7.08), getting help with chores (OR=3.09, 95% C1 1.40 to 6.83), and becoming dependent (getting kelp with meals and chores) (OR=7.50, 95% C1 1.97 to 28.6). Non-correctable bilateral visual loss was associated with many activities of daily living except falling. Conclusions: Non-correctable unilateral vision loss was associated with issues of safety and independent living while non-correctable bilateral vision loss was associated with nursing home placement, emotional wellbeing, use of community services, and activities of daily living. Correctable or treatable vision loss should be detected and attended to.