
Wavefront Laser Eye Correction
Click
here to watch an excellent live web seminar on wavefront
laser correction
Many patients do not realize that
the eye is an imperfect optical system. As light rays
from distant objects pass through the individual optical
components of the eye, they are subject to being distorted
by the imperfections found in the cornea and the crystalline
lens.
The distortions
that are created are referred to as "aberrations."
The vast majority--90% or more--of these aberrations
create common refractive errors, such as nearsightedness,
farsightedness and astigmatism, which can be treated
by optical devices, like glasses and contact lenses,
or by Laser Vision Correction, using the conventional
methods of LASIK, PRK or LASEK. The remaining 10% of
optical aberrations create images which are altered
by chromatic aberration, spherical aberration, diffraction,
curvature of field, coma, trefoils and quadrifoils--collectively
known as "higher order aberrations." These
higher order aberrations only occur in a visually
significant manner in 10% to 15% of the general population.
When they do occur, they are entirely unique to a particular
patient--much like a fingerprint. For these patients,
the use of a wavefront-guided laser technique to create
a completely customized reshaping of the surface of
the cornea may be the best treatment option.
To achieve a customized corneal
shaping, it will require measuring the higher order
optical aberrations using a wavefront analysis system
called an aberrometer and then digitally interfacing
it with a laser, using high speed computerized control
to direct the delivery of a very tiny beam of laser
energy across the cornea.

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