Size effect of color patches for their color appearance with foggy goggles simulating cloudy crystalline lens of elderly people

Abstract

The cataract eyes can be characterized by three elements; luminance, spectral distribution, and scatter, which are perceived as brightness, color, and fogginess, respectively. Change of any of the three elements may affect visual performance. The foggy element, which refers to the perception associated with a change in the optical scatter of the crystalline lens, causes deterioration of the visual acuity, pattern perception, and an uncomfortable foggy appearance over the visual field. Moreover, it also affects the ability to discriminate and perceive colors.

Chromatic interior environments for the elderly: A literature review

“…It is found that the results of most of the color studies have been done in laboratory or testing room, or using color samples and simulated images in articles, or computer programs with color samples or other color elements . Nevertheless, few studies have combined the method assessment with an actual setting context in order to evaluate the effects of participants in this context .…”

“…The fact of working with older people implies greater difficulty in moving to a laboratory or research center, due to their vulnerability; what entails having to perform the experiments in their habitual space, with environmental variables that are difficult to control. It is important to highlight the light factor, that is, to study the effects of color under different illumination conditions . In these cases, illumination is introduced as a changeable factor for their experiments.…”

“…As many studies have demonstrated over the years, an increase in lens density occurs with aging, as well as their opacification . This fact causes the partial loss of light that falls on the cornea toward the retina, due to the absorption, dispersion and reflection of it.…”

“…With aging, the increase of lens density and opacification occurs. As a result, the lens of older people produce more luminous dispersion than in young people .…”

“…Four studies restricted entry to only those with 80 years, 95 years, and with over 60 years . One study compares specific adult and aged subjects . Furthermore, if we focus on the participants characteristics, it is noteworthy that one study recruited mixed normal vision subjects with tritanomalous subjects .…”