Sunglasses. 2007 CBCJ Class Item. Purpose of Sunglasses. Protection from UV light rays Comfort to eyes in constant sun Keep eyes from tiring out Protection from dust particles Fashion. Ultraviolet Radiation.
2007 CBCJ Class Item
The darkness does not affect the ability of the lenses to protect against UV light. However, darkness will determine how mush visible light gets seen.
The color of the lenses does not affect the blocking of UV light, either. Color only determines which colors will be seen by the viewer. Color coated lenses tend to scratch easier and loose their color than lenses that are dyed. Some color coated lenses have a scratch-resistant layer added on them by the manufacturers.