Comparative analysis of the color perception loss for elderly people

In recent years, based on the report provided by the Department of Statistic, there are about 2.5 million people who are over 60 years old in Malaysia. The number of people in this elderly group is estimated to increase in the next few years. Thus, technologists have focused on the elderly group by providing various support systems to assist them in their daily activities. An area of concern for this group is on the human vision aspect where it is shown in medical reports that elderly people suffer from certain degrees of color perception loss. In this paper, a comparative analysis is performed between two fundamental researches that measure the color perception loss of the elderly people. The first fundamental research is done by Okajima et. al. which employed two-factor model that relates the effect of aging to the optical density of human lens in their computation of color perception loss for elderly. Meanwhile, apart from using the two-factor model, Tanaka et. al. took into consideration the retinal illuminance model that relates the pupil size with aging. They introduced a computational model that utilizes the rate of retinal illuminance in relation to aging and the effective components of the yellowing filter. The results observed from both researches show that elderly people suffer a certain degrees of losses in their color perception.