Shortcomings of LASIK surgery
Posted in Eye Care Articles
LASIK is far from perfect in some aspects, although many people especially those professional sports individuals strongly recommend the surgery. Most people have emphasized on advantageous sides of LASIK surgery but ignored its shortcomings.
It is hard to make a comparison between the total costs of eyeglasses or contact lenses during years long and the expense of LASIK at one time. But one point is true that eyeglasses or contact lenses do better in adjusting to prescription changes. People with visual defects can always get a pair of eyewear with proper prescription if enough test and fitting are made. As a person ages, the prescription is much likely to experience slight changes. Wearing eyeglasses or contact lenses, it is easy for the wearer to get a more precise prescription.
When it comes to LASIK procedure, these prescription changes are hard to be adjusted. The basic principle of LASIK surgery is that the corneal surface is reshaped using a laser so that its curvature will be changed. In this way, refractive errors can be corrected. However, the laser application involves tissue removal on the cornea, which is irreversible and always permanent. There is hardly a remedy once a patient is unsatisfied with the visual outcomes. A more disappointing fact is that patients are usually required to sign away their right to a lawsuit before the procedure.
Another shortcoming of LASIK is that it can not restore flexibility of one’s natural lens. As people age, eye flexibility decrease is inevitable. This means that one’s focus range will be narrowed. For contact lenses or eyeglasses, bifocal or multifocal lenses are widely used to provide vision correction at several distances, enabling wearers to see at a wider range. LASIK can always offer vision correction at only one distance.
Except for those shortcomings, LASIK as well as other laser eye surgeries also involves some risks. LASIK will thin the corneas, which are more vulnerable to shock or pressure. This is testified by the rule that military services of the USA are prohibited from receiving laser eye surgery.
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