Publications by authors named "Mary Ellen Sy"
Purpose: To determine the safety, efficacy, and predictability of combined astigmatic keratotomy (AK) and conductive keratoplasty (CK) for treating high corneal astigmatism.
Setting: University of California-Los Angeles, Los Angeles, California, USA.
Design: Retrospective case series.
Effect of posterior corneal astigmatism on refractive outcomes after toric intraocular lens implantation.
J Cataract Refract Surg
January 2015
Purpose: To compare the prediction error after toric intraocular lens (IOL) (Acrysof IQ) implantation using corneal astigmatism measurements obtained with an IOLMaster automated keratometer and a Galilei dual rotating camera Scheimpflug-Placido tomographer.
Setting: Jules Stein Eye Institute, University of California Los Angeles, Los Angeles, California, USA.
Design: Retrospective case series.
Effect of mitomycin-C on the variance in refractive outcomes after photorefractive keratectomy.
J Cataract Refract Surg
December 2014
Purpose: To compare the variance in manifest refraction spherical equivalent (MRSE) after photorefractive keratectomy (PRK) with mitomycin-C (MMC), PRK without MMC, and laser in situ keratomileusis (LASIK) for the treatment of myopic astigmatism.
Setting: Jules Stein Eye Institute, University of California, Los Angeles, Los Angeles, California, USA.
Design: Retrospective case series.
Purpose: To compare the maximum posterior elevation (MPE) measurements before and after LASIK using a dual rotating Scheimpflug (DRS) imaging system (Galilei, Ziemer Ophthalmic Systems, Port, Switzerland) and a scanning slit-beam (SSB) imaging system (Orbscan IIz, Bausch & Lomb, Rochester, NY).
Methods: This retrospective study included 78 eyes from 78 patients who underwent myopic LASIK. Preoperative and postoperative data collected included anterior and posterior best-fit sphere radius and axial curvature readings, posterior central elevation (PCE), and MPE relative to a best-fit sphere using a 7.