May Contact Lenses Cause Blindness
According to data provided by the U.S. Contact Lens Council, a total of 30,000,000 people in the United States wear contact lenses. In addition to flexibility, the contact lenses can make eyes showing a different look. The physician claimed that contact lenses can also correct a variety of visual impairment, such as nearsightedness, farsightedness, and astigmatism and focus difficulties of reading materials and other issues.
However, there is a potential risk of contact lenses on visual health. “Because of their direct contact with eyes, it can cause eye infections and corneal ulcers.” Said by the U.S. Food and Drug Administration (FDA) Medical Devices Center specialist James Saviola, “the development of these symptoms is very quickly, and will cause serious consequences; in individual cases it may cause blindness.”
The eye problems of wearing contact lenses including itching, burning sensation, photophobia, dry eyes, occasional blurred vision and visual distortion; they are often caused by the irrational use. Incorrectly wearing and cleaning of contact lenses will further increase the risk of eye infection. Clinical Medicine found that excessive use of contact lenses, especially at night continue to wear, it would seriously increase the risk of corneal ulcers, which in turn is called ulcerative keratitis. The disease may make one to two days of corneal perforation, leaving permanent scars on the cornea and even blindness. In addition, a number of diseases prefer for contact lens users, such as an aggressive form of highly parasitic infections – Acanthamoeba keratitis, among the victims of the disease, 85% of them are contact lens wearers.
It is because of the potential risks of contact lenses, the U.S. Food and Drug Administration under the Federal Food, Drug, and Cosmetic Act, conduct the related to supervision about the use of equipment. Including for vision correction and decorative contact lenses all need to be supervised. The Federal Trade Commission is also on the advertising and marketing, make requirements for contact lenses may cause substantial injury to consumers.
Contact lenses is usually a small shallow dish plastic material, they need to wear to the top of the cornea, more exactly, is floating above a very thin layer of tears. Sometimes, the contact lens is more suitable for vision correction than ordinary glasses, because they can be close to eyes and correct refractive errors. Fundamentally, the contact lens is prescription equipment, like many drugs, they need according to the disease to prescribe the right medicine. Therefore, the choice for your contact lenses is very important.
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