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Lakshmana M Kooragayala, MD Vitreo-retinal Surgeon, Marietta Eye Clinic

Lakshmana M Kooragayala, MD is a member of the following medical societies: American Academy of Ophthalmology, American Society of Retina Specialists

Disclosure: Nothing to disclose.

Francisco Talavera, PharmD, PhD Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Received salary from Medscape for employment. for: Medscape.

R Christopher Walton, MD Adjunct Professor, Department of Ophthalmology, University of Texas Health Science Center at San Antonio

R Christopher Walton, MD is a member of the following medical societies: American Academy of Ophthalmology, American Uveitis Society

Disclosure: Nothing to disclose.

Andrew G Lee, MD Chair, Department of Ophthalmology, Blanton Eye Institute, Houston Methodist Hospital; Clinical Professor, Associate Program Director, Department of Ophthalmology and Visual Sciences, University of Texas Medical Branch School of Medicine; Clinical Professor, Department of Surgery, Division of Head and Neck Surgery, University of Texas MD Anderson Cancer Center; Professor of Ophthalmology, Neurology, and Neurological Surgery, Weill Medical College of Cornell University; Clinical Associate Professor, University of Buffalo, State University of New York School of Medicine

Andrew G Lee, MD is a member of the following medical societies: American Academy of Ophthalmology, American Geriatrics Society, Houston Neurological Society, Houston Ophthalmological Society, International Council of Ophthalmology, North American Neuro-Ophthalmology Society, Texas Ophthalmological Association

Disclosure: Received ownership interest from Credential Protection for other.

Andrew A Dahl, MD, FACS Assistant Professor of Surgery (Ophthalmology), New York College of Medicine (NYCOM); Director of Residency Ophthalmology Training, The Institute for Family Health and Mid-Hudson Family Practice Residency Program; Staff Ophthalmologist, Telluride Medical Center

Andrew A Dahl, MD, FACS is a member of the following medical societies: American Academy of Ophthalmology, American College of Surgeons, American Intraocular Lens Society, American Medical Association, American Society of Cataract and Refractive Surgery, Contact Lens Association of Ophthalmologists, Medical Society of the State of New York, New York State Ophthalmological Society, Outpatient Ophthalmic Surgery Society

Disclosure: Nothing to disclose.

The authors and editors of Medscape Reference gratefully acknowledge the contributions of previous coauthor, James P Ganley, MD, PharmD, DrPH, to the development and writing of this article.

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