If a magnifying glass will magnify the sun’s rays, then wouldn’t wearing prescription glasses actually be dangerous for our eyes?

Question

If so, does prescription glasses that come with photochromatic or polarised lenses help to combat this?

In: Biology

Answer 1

All lenses focus light, including the lens in your eye. Prescription glasses just move that focal point to where it should be, they don’t collect any more light than your eyes do. That being said – Do you look directly in the sun when you wear glasses (or when you aren’t)? That is dangerous, with or without glasses because sunlight is strong enough to damage your retina permanently.