Intraocular lens calculations after refractive surgery.

Purpose: To evaluate the effect of refractive surgery on intraocular lens (IOL) power calculation, compare methods of IOL power calculation after refractive surgery, evaluate the effect of pre-refractive surgery refractive error on IOL deviation, review the literature on determining IOL power after refractive surgery, and introduce a formula for IOL calculation for use after refractive surgery for myopia.

Setting: Laser & Corneal Surgery Associates and Center for Ocular Tear Film Disorders, New York, New York, USA.

Methods: This retrospective noncomparative case series comprised 21 patients who had uneventful cataract extraction and IOL implantation after previous uneventful myopic refractive surgery.

Laser in situ keratomileusis in a patient with congenital nystagmus.

We report the results of laser in situ keratomileusis (LASIK) to correct myopia in a 47-year-old woman with congenital motor nystagmus and myopia. The patient had simultaneous bilateral LASIK using the Alcon-Summit-Autonomous LADARVision excimer laser. Her uncorrected visual acuity (UCVA) preoperatively was 20/600 in the right eye and 20/800 in the left eye; best corrected visual acuity was 20/40 in both eyes.