July 2008
advise you not to the doctors running behind fashion without thinking, especially when buying sunglasses cheap, and recalls d. Sameh specialist at the University of Ain Shams conjunctivitis that many of the designers of sunglasses to Aehtmon only the form and appearance and color to satisfy and satisfy the desire and psychological attention Protected Persons Aktrmen Al Ain from harmful rays
The research confirmed that many of these glasses mask a lot of invisible rays but at the same time allow for a large part of ultraviolet and infrared rays to reach the eye, the eye of this subject for a long time for those rays from the window glasses damaged, especially if the X-window visual ratio is less than 80% of the total radiation consists of seven colors, and different sensitivity of the eye to see these colors, quoting a stronger degree of sensitivity to the green, so we find that the doctors advising people comfortable in the countryside where surrounded by greenery Which makes the eyes exposed to less stress as possible and thus be more relaxed, as I said "Al-Ahram."
The expert noted that when implemented the red rays of eye glasses to cause a rise in temperature of some parts of the eye cornea and iris particular, may cause pain, red because the sensory nerve in this very sensitive parts of any rise in temperature of a simple eye even if the exposure For short periods of time and allow increased exposure to the sun.
Specialists advised that in view of the glass around us without the use of solar light, even if severe, because the damage in this case would be less because the eye adapt itself to determine the amount of light falling on parts of Interior through the narrow circle Eyelids example, or to areas of shade
