Publications by authors named "Ralph Chu"

Purpose: To evaluate the safety and effectiveness of a new aspheric ablation profile for correcting myopia and myopic astigmatism.

Methods: This prospective, multicenter study included patients who underwent laser in situ keratomileusis (LASIK) using a new aspheric ablation profile of the Technolas Teneo 317 (Model 2) excimer laser (version 1.28 US SW) by Technolas Perfect Vision, Bausch+Lomb, Inc.

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Introduction: The aim of this study was to evaluate the safety and efficacy of a violet-light filtering intraocular lens (IOL) compared to a colorless IOL control.

Methods: This was a prospective, bilateral, randomized, comparative, patient/evaluator-masked multi-center clinical trial at 12 sites in the USA. Patients underwent standard small-incision phacoemulsification cataract extraction.

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We report two cases that underwent corneal inlay implantation under a femtosecond flap. The first case had no complications during the postoperative period. Pentacam maps remained stable over time: corneal densitometry (CD) values had less than 2 units of change across visits up to 3 years.

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Purpose: To report 1-year safety and efficacy clinical outcomes of a shape-changing corneal inlay for the treatment of presbyopia.

Design: Prospective, nonrandomized, multicenter United States Food and Drug Administration Investigational Device Exemption clinical trial (clinicaltrials.gov identifier, NCT01373580).

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Purpose: To evaluate the effectiveness of a hydrogel sealant versus a suture in preventing fluid egress after wound leakage in cataract surgery.

Setting: Twenty-four ophthalmic clinical practices in the United States.

Design: Prospective randomized parallel-arm controlled multicenter subject-masked study.

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Purpose: To evaluate the safety and effectiveness of the aspheric diffractive Tecnis multifocal ZM900 (TCMF) intraocular lens (IOL; Abbott Medical Optics, Inc, Santa Ana, California, USA).

Design: One-year, nonrandomized, multicenter, evaluator-masked, bilateral, parallel-group comparative clinical evaluation.

Methods: Subjects underwent bilateral implantation with the TCMF IOL or the CeeOn 911A monofocal (CEMN) IOL (Abbott Medical Optics, Inc) according to subject preference.

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