Optical Density of the Crystalline Lens

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Abstract
The optical density for the noncataractous crystalline lens is written as a sum of 2 terms, each with a specific dependence on wavelength. The 1st term, proportional to 1/.lambda.2, represents all light-scattering processes in the lens. The 2nd term, assumed significant only for .lambda. .ltoreq. 500 nm, accounts for absorption by lens pigments. By analyzing transmittance data on lenses of [human] subjects aged 21-63 yr, a spectrum for light absorption by lens pigment is derived and it is essentially the same for all the lenses.

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