H. John Shammas, M.D.

Dr H. John Shammas | Ophthalmologist Lynwood CA | Downey CA | Whittier CAH. John Shammas, M.D. is an American Board Certified Ophthalmologist. He completed his training at the University of Iowa. He was licensed to practice medicine in Iowa in 1976 and in California in 1977.

He is a clinical Professor at the University of Southern California (USC), spending time every month teaching medical students at the Keck School of Medicine.

He belongs to the Los Angeles County, California and American Medical Associations, the Los Angeles Society of Ophthalmology, the American Academy of Ophthalmology, the American and International Societies of Ophthalmic Ultrasound, the American Intraocular Implant Society and the Outpatient Ophthalmic Society. He has earned certificates and awards from the American Academy of Ophthalmology and the American Medical Association.

Dr. Shammas has published approximately 150 original articles in the American and international literature and multiple chapters for medical books, notably Ophthalmic Plastic and Reconstructive Surgery, Current Ocular Therapy I, II, III and IV, Diagnostic Imaging in Ophthalmology, Care of the Cataract Patient and 101 Pearls in Cataract and refractive Surgery.

He is the world leading expert in ultrasound diagnosis of medical eye conditions and is the author of the Atlas of Ophthalmic Ultrasonography and Biometry, published by C. V. Mosby Co. in 1984, of the Three-Dimensional Ultrasound Tomography of the Eye, published by Nova Coast Co. in 1998, and Ultrasound in Ophthalmology, Proceedings of the 17th SIDUO Congress published by S. Roderer Verlag in 2000. The three books are considered the leading textbooks on the subject, and are used by ophthalmologists and universities in the United States and abroad. The first book was also translated into Italian.

Dr. Shammas is a specialist in laser and small incision cataract surgery that allows an amazingly fast post-operative recovery. He is a regular lecturer at the American Academy of Ophthalmology, the American Society of Cataract and Refractive Surgery, and at the American and International Societies of Ophthalmic Ultrasound, and he has delivered over 200 resentations in the field of ophthalmic surgery at hospitals and university centers across the country. He is the author of multiple audiotapes and videotapes on axial length measurement and intraocular lens calculations, using the Shammas formulas.

A few years ago, he published his special “how-to” book on Cataract Surgery published by J.P. Lippincott Co. With its 225 pages and 216 illustrations, the book describes the latest state-of-the-art cataract techniques. Recently, Dr. Shammas received great reviews on his fifth (published by The News Circle Publishing House in 1996) and sixth (published by Slack, Inc. in 2004) books on Intraocular Lens Power Calculations. The 200 page book is dedicated to improving patient satisfaction after cataract surgery.

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