Questions tagged [visible-optical-spectrum]

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Which kind for filter to protect eyes from LED's blue light : UV(A), UV(B) or UV(C)?

I heard about the so called "retinal light toxicity" that the blue light from LED lighting may cause. I would like to mount a filter on the objective of my microscope to reduce the risk of injuries, ...
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Can prescription lenses correct Chromatic Aberration?

Are prescription lenses available to correct chromatic aberration of the human eye? I find the effect quite appreciable: at night, I see circular rainbows around bright street lamps, and am unable ...