The Effect of Spectral Composition of Lightening on Visual Performance of Persons with Retinal Pathology

K. Fitzmaurice, HDTS, DipAppSci(Orth) DOBA

Clinically it has been observed that visually impaired patients have definite preferences for lamp lights of certain wavelength compositions. A pilot study was conducted to assess the visual function of subjects with retinal pathology under three different lighting conditions. It was found that subjects with foveal function had higher levels of visual acuity under green light. Subjects without foveal function did not show this preference. All subjects demonstrated greater levels of contrast sensitivity under blue and green lights.