Human lenticular fluorescence and transmissivity, and their effects on vision.

Measurements were made of the spectral transmissivity of freshly isolated normal human crystalline lenses. Parameters included age, sex and the intensity of the measuring radiation. The latter played a small but detectable role; age, unlike sex, was a significant factor, notably at short wavelengths. The axial fluorescence of lenses due to exposure to violet (visible) radiation was also studied with the above parameters. Absolute measurements of the fluorescent radiation made it possible to assess the influence of fluorescence on vision.