Dr. Sang An is a therapeutic optometrist, as well as a glaucoma specialist, who specializes in treating patients with eye diseases and disorders, such as blepharitis, glaucoma, corneal degeneration, corneal dystrophy, and patients with post-surgical, keratoconic, multi-focal, astigmatic, or other difficult to fit prescriptions for gas permeable and soft contact lenses.

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​Dr. An attended the University of Texas at Dallas for two years before transferring to the University of Houston to pursue his dream of becoming an optometrist. After completing his undergraduate study, Dr. An was admitted to the University of Houston College of Optometry in 2002, where he received comprehensive clinical training and experience, positioning him to provide excellent eye care services.