Many people find direct sunlight too bright to be comfortable,especially when reading from paper in direct sunlight. In outdooractivities like riding, skiing and flying, the eye can receive morelight than usual. It has been recommended to wear these kind of glasseswhenever outside to protect the eyes from ultraviolet radiation, whichcan lead to the development of a cataract. Sunglasses have also beenassociated with celebrities and film actors primarily due to the desireto mask identity, but in part due to the lighting involved inproduction typically being stronger than natural light anduncomfortable to the naked eye.
