Your eye and vision is like a fingerprint—truly distinctive and personal. It is distinctive because light is scattered unevenly to form a pattern that is unique to your eye and because your cornea has a unique shape. Wavefront assessment involves an extra diagnostic screening process extensive enough to let the surgeon see every individual patient’s unique optical characteristics.
Wavefront software combines data from two different types of diagnostic equipment, then programs the laser with your unique treatment, based on this data. Wavefront provides the most technologically advanced measurement of scattered light errors (defects) known as high order aberrations in the eye. Wavefront technology is based on the principle that if an eye had no imperfections at all, light passed through it would not scatter. But, because no eye is perfect, light scatters to form distinct patterns, called a wavefront. Wavefront technology measures your personal/individual patterns and thus allows the surgeon to plan a treatment that exactly matches individual vision errors.
Although most people do not have significant aberrations, wavefront can be indicated in approximately 15% of patients to enhance their outcome. This provides less potential for night vision disturbances, halos, and glare. Age and spectacle prescription have no bearing on potential for having high order aberrations. The size of the pupil does have a correlation with high order aberrations, as they tend to be more peripheral in the optical system.
Wavefront is a specialized treatment, with additional costs associated to the procedure. You must have a full evaluation to identify if you are a candidate for this technology. It is not for everyone.
An aberrometer shines a beam of light into the eye, allowing the system to measure irregularities within the optical system of the eye. The irregularities are then displayed graphically on a computer. It measures high order aberrations.
If one does not have high order aberrations pre-operatively, then one does not require wavefront guided ablations. The problem is non-existent, and therefore the need to treat it is not beneficial.
If a patient has significant high order aberrations pre-operatively, then they may benefit from the Wavefront Technology.
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