The contact lenses must clean the disinfection every day, the procedure are also troublesome, is not advantageous insisted.If the elementary discount oakley sunglasses and middle school students premature or the long time has one's eyes tested and wear glasses the contact lenses continuously, easy to have side effects and so on cornea oxygen deficit and physiology metabolic block; The lens clean disinfection is lax, then following will send the infection; If the lens winding path does not adapt with the cornea, will also cause the cornea to wear, the epidermis will fall off, serious will cause the keratohelcosis or the perforation. Therefore, Our country eye doctors pointed out: The elementary and middle school students have one's eyes tested and wear glasses the contact lenses to be extremely careful suitably, if not specially essential, take wears the frame eyeglasses suitably as. To contracts highly the nearsightedness or the hyperopia, the anisometropia, astigmatism and so on cheap oakley sunglasses australia must firmly wearing, must arrive has the condition hospital or the specialized optical shop inspection, surveys needs lens' number of degree, and studies has one's eyes tested and wear glasses the method and lens' disinfection processing, in order to avoid future trouble.In cold patient cold patient hand often has the massive germs, they very easy when takes, wears the contact lenses enters in the eye. In addition, cold often is accompanied by the slight retina inflammation, wears the contact lenses to be able to cause the inflammation aggravation. Many colds, relieve a cough with the analgetic medicine in include suppress the tear the ingredient. The tear fluid secretion reduces can cause the contact lenses to be too dry, the transparency to reduce, then influence vision. Human who the allergic patient has the anaphylaxis has one's eyes tested and wear glasses the complication which the contact lenses easy to cause to have the slight inflammation, the eye pruritus, inflamed, the conjunctivitis and the eye swelling and so on. If these illness do not treat for a long time, will endanger possibly the vision. The anaphylaxis like must have one's eyes tested and wear glasses the contact lenses, should better only in the daytime oakley sunglasses clearance use, and each week at least the one day of suspension use. If has the inflammation, should better stop the use. If from 2 to 3 days later the inflammation had still not reduced, should arrive at the hospital seeing a doctor immediately.Glaucoma, chronic dacryocystitis, conjunctivitis, keratohelcosis, armor high and so on disease patients, if had the contact lenses, but the eye is occupying the inflammation time, after must treat inflammation vanishing, wears again.