LASIK-related concerns

The corneas of the patient should be stable before LASIK procedure, especially for those who have worn hard contact lenses for many years. Permanent visual surgery can be conducted only if there are two identical prescriptions and corneal checks.

High altitude is not directly associated with LASIK problems. There are no age limits for refractive surgeries. Although it is harmless, iris coloboma in some people is a contraindication to laser vision correction surgery. The disease is usually congenital.

After LASIK, the patients may need reading glasses for near vision while distance vision can be ensured by LASIK procedure. Another solution is to use monovision LASIK, in which one eye is corrected for near vision and the other for distance vision. A variety of antibiotics and steroids can be used postoperatively. But some patients may have drug allergies, which require prior consultation with the doctor.

Normal astigmatism causes irregular curvatures of the cornea. The cornea then appears in an egg shape. The two curvatures of regular astigmatism are perpendicular to each other. However, there is still another type of astigmatism named mixed astigmatism, in which the two curvatures are not perpendicular to each other. Mixed astigmatism is harder to cure and its surgical result is also more unpredictable.

The neurologically based disease named nystagmus is a back and forth jerkiness of the eyes, affecting visual acuity and focus ability. There are currently no effective treatments for this problem. But some eye practitioners find that contact lenses may help.