What is the science behind sunglasses?

submitted 2 years ago by goodrichoptical to demcra

The lenses of sunglasses are typically made of a special type of glass or plastic that can absorb or reflect specific wavelengths of light. Most sunglasses have lenses that block UV rays, which can cause damage to the eyes over time, such as cataracts, macular degeneration, and skin cancer on the eyelids.