Before LASIK Surgery

Evaluating Your Eyes

Once you have decided to get LASIK surgery, you will need to have an eye evaluation to determine which type of procedure is best for you. If you wear contact lenses, you may be asked to not wear them for up to two weeks before your evaluation so that your eyes return to their natural shape.

Doctor performing eye exam

A thorough evaluation of your eyes will help determine if you are eligible for LASIK and if you have any conditions that may be problematic. The evaluation usually consists of:

  • Testing your vision
  • Mapping the shape of your cornea
  • Screening for eye diseases, including glaucoma, cataracts or diabetic retinopathy
  • Measuring corneal thickness, eye movement and pupil size
  • Assessing the back of the eye

If you wear contact lenses between the evaluation and the surgery, you will need to stop wearing them again for up to two weeks prior to surgery.

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Important Information About the WaveLight® Excimer Lasers

WaveLight® Excimer Lasers are prescription medical devices that are approved for use in performing laser-assisted in situ keratomileusis (LASIK) to correct certain kinds of nearsighted (myopia), farsighted (hyperopia), and astigmatism. Only doctors who have been trained in laser refractive surgery (including laser calibration and operation) should use an WaveLight® Excimer Laser.

You should not undergo LASIK surgery if you are pregnant or nursing; if you have a collagen vascular, autoimmune or immunodeficiency disease; if you show signs of keratoconus or any other condition that causes a thinning of your cornea; or if you are taking isotretinoin (Accutane*) or amiodarone hydrochloride (Cordarone*). The most common risks of LASIK vision correction surgery with refractive lasers include dry eye syndrome; the possible need for glasses or contact lenses after surgery; visual symptoms including halos, glare, starbursts, and double vision; and loss of vision.

Talk to your doctor and review the appropriate WaveLight® Excimer Laser Patient Information Booklet for your condition to learn more about the potential risks and benefits for laser refractive surgery. For further information, please refer to the additional Important Product Information on this site, or FDA’s web page on LASIK surgery.

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