The screen and the eye must be away from 30~45 centimeters, moreover best is lower than the eye line of sight, because looks up at the screen, will increase the eyeball exposure the area, will let the adidas sunglasses tear fluid evaporate quickly.8. correct has one's eyes tested and wear glasses the contact lenses. When normal has one's eyes tested and wear glasses the time is one day of 8~12 hour, the sleep insufficiency, must reduce the time which has one's eyes tested and wear glasses.
  The abandonment-like eyeglasses, the time to must eliminate, because the material quality will decline, will pass the oxygen rate to change, also will affect eye's dry degree.9. the attention mouth takes medicine ingredient. The sleeping pill, the mood-stabilizing medication or the allergic physique eats the antihistamine can affect the sympathetic nerve, but the nerve and the sympathetic nerve concern with the tear gland secretion.10. active treatment eyeball surface disease. The trachoma, the chronic conjunctivitis or the eyelid inflammation easy to let the eye conjunctiva form the scar, destroys the epithelia corneal cell, also will destroy the secretion tear fluid the cell. Therefore, if the eye has any question, should ask ophthalmologist to treat as soon as possible, avoids the eyeball cell destroying, forms xerophthalmia.wholesale sunglasses Prevents the eye to do the astringent measure.The investigation confirmed that every day works before the computer in 3 hour above person, 90% people contract the eye to do astringently. But zai weilai 5 nian zhong, the eye will do the astringent patient population also by every year 10% above speed rise.The long time wears the contact lenses to be also easy the eye to do astringently, this is because the contact lenses are very easy to adsorb the moisture content, thus causes the eyeball surface dehydration.The eye does astringently is also at present unable to permanently cure, on clinical mostly uses the artificial tear fluid alleviation symptom. The artificial tear fluid has Shui Ji and the paste body two kinds, the symptom weight is different, the use artificial tear fluid is not same. Once stops using, the symptom will often recur.Maintains the good work, the habits and customs is prevents the eye to do the astringent effective measure.
  Must first avoid the long time operation computer, the attention middle rest. Usually the continuous-running 1 hour, rests 5 to 10 minutes. When rest may have a look at the distant place or make ocular gymnastics cheap oakley sunglasses Next must adjust the monitor and eye's distance and the position, suggested that was away from 50 to 70 centimeters, the position slightly is lower than the eye level line 10 to 20 centimeters, monitor's brightness do not be too bright, adjusts the greatest brightness half to be possible, take looked at the clear content slightly to be but darker than suitably the periphery object as.