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).
Hong
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School of Optometry, Indiana University, Bloomington 47405, USA. xhong@indiana.edu
Thibos
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D000328:Adult; D001251:Astigmatism / Q000209:etiology* / Q000503:physiopathology; D003315:Cornea / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D019781:Corneal Topography / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D020731:Keratomileusis, Laser In Situ / Q000009:adverse effects*; D011680:Pupil; D012029:Refraction, Ocular; D054140:Refractive Surgical Procedures; D014792:Visual Acuity