Am I a candidate?
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Today, refractive laser surgery makes it possible to improve the eyesight of the vast majority of patients who wear glasses. Many solutions are available, and your doctor will know how to fit your needs precisely. In some cases, laser surgery is totally contraindicated. Intraocular surgical methods can then be used, however, to implant corrective lenses in the eye.
The refractive surgeon will guide you through all of these choices, making sure not to subject you to useless risks. For this reason, you should undergo a complete pre-operatory evaluation.
The purpose of this check-up is to determine if your cornea (the transparent outer layer of the eye) is apt to be treated (reshaped) with the laser, and to choose the treatment profile and ideal method for you. Plan to spend 60 to 90 minutes in the office, and be aware that you will not be able to drive for 12 hours after the office visit.
Corneal topography (mapping). Devices used: Alcon Topolyzer and Oculyzer.
- Precision measurement of the characteristics of your cornea (thickness, shape, optical power) and detection of anomalies or irregularities.
- Iris imagery serving as a reference for the laser, to center the treatment in precisely the right place.
- Calculation of laser ablation profiles tailored to your eye’s unique features.
Wavefront aberrometry. Devices used: Nidek OPD scan III.
- Measures and maps the path of light rays through your eye’s optics system, from cornea to retina. This information is needed to guide treatment profiling as a function of the various optical zones of the eye. It also detects any irregularities of the lens, which could influence the surgeon’s decisions.
Refraction: summary of your eye’s optical particularities.
- Including the power of your glasses or contact lenses, the objective power measured by our devices, the optical power of your eyes in “normal conditions,” and their optical power under cycloplegia (temporary ciliary paralysis and loss of accommodation by topical application of drops: this is why it is forbidden to drive a car for 12 hours after the examination)
Basic ophthalmological evaluation: slit-lamp exam, intraocular tension measurement, and retinal exam (see below).
- Detection of any eye disease that would contraindicate refractive surgery.
After this evaluation, the surgeon will discuss the results and share the options available to you. He will also make sure that your expectations of what refractive surgery can do for you are realistic, so that you can go on to the next step confidently.