15 Jan
2020
15 Jan
'20
6:53 a.m.
Wayne Bretl via colorsync-users wrote:
Before I developed cataracts, they appeared to have a slight amber tint, especially noticeable in natural outdoor light, but also by placing them on a piece of white paper under artificial light.
If the paper was cheap, then this effect may be mostly the lens blocking the UV that triggers the paper Fluorescent Whitening Agent. Graeme Gill.