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Hindsight
is always 20/20, but 20/20 results may be generated by foresight.
Previous
refractive surgery may have induced higher-order optical aberrations
with decreased contrast sensitivity, diminished night vision,
and frequent complaints of glare and haloes.
Optics,
vision science, and wavefront sensing have joined ophthalmology
and computerized corneal topography to advance vision correction
surgery.
Excellent
surgical results with prevention and management of complications
are now a reality. Diffraction limited visual acuity is now
a possibility. Refractive surgery has become rocket science!
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