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Astigmatism Correction

Astigmatism is a condition in which the surface of cornea is irregular. Normally, the surface of the cornea is smooth and round, like the shape of a round ball (such as a basketball), which is equally round in every direction has no astigmatism. In contrast, a football, which is not equally round in every direction, has significant astigmatism. A clear, smooth, round cornea gives optimal vision. However, when the surface of the cornea becomes irregular, vision becomes impaired.

There are three ways to correct astigmatism surgically:

  • Limbal relaxing incisions
    • Limbal relaxing incisions are made (usually in pairs) near the outer edge of the cornea in order to make the contour of the cornea rounder.
    • Limbal relaxing incisions are typically made at the time of cataract surgery, but it can be done in any eye with astigmatism.
    • Limbal relaxing incisions are limited to correct mild astigmatism.
  • Toric intraocular lens
    • Toric intraocular lens is a special type of intraocular implant that can compensate the for the astigmatism in the cornea.
    • Toric intraocular lens has to be inserted into the eye in conjunction with the removal of cataract at the time of cataract surgery.
    • Toric intraocular lens can correct mild to moderate astigmatism.
  • Laser vision correction
    • Laser vision correction (LASIK and PRK) is highly effective in correcting astigmatism.
    • Laser vision correction can correct more astigmatism than limbal relaxing incisions and toric intraocular lens.
    • Laser vision correction can correct highly irregular astigmatism, which are not correctable with limbal relaxing incisions or toric intraocular lens implant.
    • Laser vision correction can be customized to treat astigmatism unique to each patient.
    • Laser vision correction can be used to treat eyes with mild to moderate astigmatism.
Lombard Office
2500 S Highland Ave, Suite 110
Lombard, IL 60148
Darien Office
2602 West 83rd St
Darien, IL 60561