The necessity for wearing sunglasses has been well instilled in the public mind by optical manufacturers . “If you don’t wear sunglasses every contact with strong light, you are in danger of eye damage, “is their message
This has become another multi-million dollar business. The fact that
people who spend most of their lives in strong sunlight without wearing sunglasses and still retain good vision is completely ignored.
Arabs spend long hours in the desert under brilliant sunlight without
apparent harm to their eyesight. American Indians spend most of their days in
Sunshine. Africans have never found the need for sunglasses except when some white traders barter them as trinkets
Sunlight, under normal conditions, is not an enemy of the eyes. On the
contrary, it is an essential element for healthy strong eyes. When eyes are deprived of sunlight for long periods of time, they become weak and oversensitive to light . It is well known that persons deprived of light for long periods of time lose their eyesight .