Aging and human cone photopigments.

  title={Aging and human cone photopigments.},
  author={Ann E. Elsner and Lee Berk and Stephen A. Burns and Patti Rosenberg},
  journal={Journal of the Optical Society of America. A, Optics and image science},
  volume={5 12},
We used a noninvasive technique to investigate changes in photoreceptor function with aging in observers 13-69 years of age. This technique, steady-state color matching, provides estimates of the optical density of cone photopigments, the illuminance that bleaches half of the photopigment, and the ratio of the primaries required at moderate light levels. In normal human retinas, we found that the optical density for a 4-deg field is affected minimally by aging from the second through the… CONTINUE READING