Longitudinal evaluation of optical aberrations following laser in situ keratomileusis surgery.
Objective measurements of the optical aberrations of an eye were taken with a Shack-Hartmann aberrometer immediately before, immediately after, and at regular intervals over a two month recovery period following LASIK refractive surgery. Results indicate that the surgery induced large amounts of positive spherical aberration which regressed slightly during recovery. Computed point-spread functions for various pupil diameters indicate that retinal image quality was the same before and after surgery for small and medium sized pupils (<4 mm diameter) but was significantly degraded for large pupils (>4 mm).
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