Reports have surfaced across the internet about a college student losing her vision by the overuse of contact lenses. These reports have become a forewarn to every person who wears contact lenses about the importance of following instructions given by their optometrist and the risks involved by straying from them. Although contact lenses are a miracle to use for many, they are a hazard to the health of your eyes if not treated like a proper medical device.
Contact lenses are optical medical devices that are primarily used to correct visual or various refractive errors of the eye including presbyopia. Though, they could be used for other purposes like for cosmetic use. When in contact with the eye, the contact lens functions as the initial optical element of the eye. The optics of the contact lens combines with that of the eye to properly focus light on the retina to give clear vision.
Contact lenses reduce the amount of oxygen to your cornea by more than half. This restriction of oxygen causes your eyes to experience a form of fatigue by the end of the day. Dust and debris from the air start to collect in-between the contact lens and your cornea, making the surface of your cornea gritty and exposed to infection.
The previously mentioned patient irreversible damaged her cornea because of a condition called Acanthamoeba keratitis. The condition is a rare case of infection due to a common amoeba called Acanthamoeba that exists in the air, soil, dust and water. This amoeba thrives in low oxygen environments with bacteria, making infected contact lenses the perfect place. The amoeba adheres to the corneal epithelium and penetrates Bowman’s layer, eating away the stroma and the rest of the cornea(layers of the cornea). Common symptoms of this infection are eye pain, redness, blurred vision and sensitivity to light. In the news story, the amoeba ate away the cornea which led to loss of vision and blindness. By not removing her contact lenses for 6 months, she put her eyes in danger of infection.
Here are some tips to keep your eyes healthy when wearing contact lenses1.Wash your hands before handling any contact lens.
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