AAPECS Eye Care : LASIK : Custom Cornea

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Correction Procedures: lasik:
Customized laser treatments

Quantity vs. Quality of Vision

You are familiar with the standard Snellen Eye Chart — the one doctors get us to read with lines of letters that get progressively smaller. This chart has been the standard for hundreds of years to measure vision. If you can identify the small letters on the 20/20 line from 20 feet away, you've scored 20/20 on the test. But does that mean you have excellent vision? Not if you aren't seeing those letters crisp and clear...

Lower and Higher Order Aberrations
The visual distortions caused by nearsightedness, farsightedness and astigmatism are called "lower order aberrations" and account for 85-90% of the overall quality of your vision. Standard laser vision correction, glasses and contacts can only correct these visual distortions.

Higher order aberrations are those imperfections in the eye's optical system that may affect the clarity of your vision. These aberrations can cause glare, shadows, halos and other annoying visual effects.

Unless these higher order aberrations are addressed along with the lower order aberrations, the quality of your vision may not be ideal, even if you have measurable vision of 20/20.

With the advanced technology of Customized Laser Treatment, it's possible to measure and address both lower and higher order aberrations. Customized LASIK may deliver results better in some patients than conventional laser vision correction!

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