As to a person with twenty-twenty vision, he can perform instrumental activities of daily living freely without any inconvenient. However, loss of visual acuity negatively impacts an elderly person's instrumental activities of daily living levels such as using the telephone, shopping and doing housework, which are all measures of an individual's ability to live independently, and that subsequently increases the risk for death.Prevention of disabling ocular conditions, treatment of correctable visual impairment, and interventions designed to prevent the effect of visual impairment on IADL declines may all reduce mortality risk in aging adults