Apart from being fashion staples, contact lenses have been accepted by ophthalmologists and eye patients alike as a viable alternative to eye glasses. As a matter of fact, more patients are beginning to prefer contact lenses over glasses and as of 2011, there were approximately 36 million Americans using contact lenses to compensate for refractive errors.
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While advantageous in a myriad of ways, contact lenses are not without some downsides. One of the greatest problems that contact lens users may have to contend with is the risk for corneal abrasions.
Cornea: The eye’s fine window
The cornea is “a transparent, dome-shaped window covering the front of the eye.” It is an important anatomical structure which makes for a powerful refracting surface, and provides approximately 2/3 of the eye’s focusing power.
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Inasmuch as it is the eye’s frontline protective structure, it is as fragile as any mucosal membrane; perhaps more so, owing to its fineness. This is why even the tiniest particles like dirt, dust, sand, and wood shaving can superficially scratch the cornea, resulting to abrasions.
This condition may be worse for contact lens wearers. A 2004 study by Quinn and Kwartz stated that “contact lenses can compromise the corneal epithelium,” making it more susceptible to cuts and tears. To make matters worse, contact lenses can also act as “pathogenic vectors,” and may take part in facilitating the development of bacterial keratitis. Quinn and Kwartz observed that contact lens wearers may be at risk for a rapid-progression corneal scarring, and if worst comes to worst, corneal perforation.
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The rise in contact lens use is largely due to its convenience, but because of its accompanying risks, users are reminded to observe commensurate care, as corneal abrasions may be a hefty price to pay for even a measly lack of caution in usage.
Dr. Hitesh K. Patel is an Edison-based ophthalmologist. This Facebook page provides helpful information on the prevention and treatment of common eye problems.
