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Roberto Zaldivar is an Argentinian doctor of ophthalmology and a refractive surgeon. [1] He is credited with several breakthroughs in the use of lasers to correct visual impairments. [2] Zaldivar is credited for a technique called bioptics, a term he introduced.
Zaldivar practices medicine at the Instituto Zaldivar, located in the Argentine city of Mendoza.
Ophthalmology is a clinical and surgical specialty within medicine that deals with the diagnosis and treatment of eye disorders. A former term is oculism.
Refractive surgery is optional eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact lenses. This can include various methods of surgical remodeling of the cornea (keratomileusis), lens implantation or lens replacement. The most common methods today use excimer lasers to reshape the curvature of the cornea. Refractive eye surgeries are used to treat common vision disorders such as myopia, hyperopia, presbyopia and astigmatism.
An Intraocular lens (IOL) is a lens implanted in the eye usually as part of a treatment for cataracts or for correcting other vision problems such as short sightedness and long sightedness, a form of refractive surgery. If the natural lens is left in the eye, the IOL is known as phakic, otherwise it is a pseudophakic lens. Both kinds of IOLs are designed to provide the same light-focusing function as the natural crystalline lens. This can be an alternative to LASIK, but LASIK is not an alternative to an IOL for treatment of cataracts.
A phakic intraocular lens (PIOL) is an intraocular lens that is implanted surgically into the eye to correct refractive errors without removing the natural lens. Intraocular lenses that are implanted into eyes after the eye's natural lens has been removed during cataract surgery are known as pseudophakic.
Cataract surgery, also called lens replacement surgery, is the removal of the natural lens of the eye that has developed a cataract, an opaque or cloudy area. The eye's natural lens is usually replaced with an artificial intraocular lens (IOL) implant.
Marvin Leo Kwitko, FACS, FICS, FRCS, KStJ was a Canadian ophthalmologist who pioneered in cataract surgery and laser eye surgery. He is one of Canada’s most distinguished ophthalmologic writers and surgeons. Kwitko was the first doctor in Canada to insert intraocular lens implants during cataract surgery (1967) and the first doctor in Canada to perform radial keratotomy surgery (1979).
José Ignacio Barraquer Moner was a Spanish ophthalmologist and inventor born in Barcelona who did most of his life's work in Bogotá, Colombia.
Stephen Updegraff, M.D., FACS is an American refractive surgeon best known for his early involvement in, and contributions to, LASIK. He is a Fellow of the American College of Surgeons, a board-certified member of the American Board of Ophthalmology, a founding member of the American College of Ophthalmic Surgeons, and a member of the International Society of Refractive Surgery, the American Academy of Ophthalmology, the American Society of Cataract and Refractive Surgery, and the Pine Ridge Eye Study Society. Updegraff currently serves as the medical director of Updegraff Vision in St. Petersburg, Florida.
Howard V. Gimbel FRCSC, AOE, FACS, CABES, is a Canadian ophthalmologist, university professor, senior editor, and amateur musician. He is better known for his invention, along with Thomas Neuhann, of the continuous curvilinear capsulorhexis (CCC), a technique employed in modern cataract surgery.
Eric John Arnott, MA, FRCS, FRCOphth was a British ophthalmologist and surgeon who specialized in cataracts, a condition which in many parts of the world still remains the principal cause of blindness. He is known for inventing new surgical techniques for treatment of various ophthalmological disorders, and received professional awards for his contributions.
Peter S. Hersh is an American ophthalmologist and specialist in LASIK eye surgery, keratoconus, and diseases of the cornea. He co-authored the article in the journal Ophthalmology that presented the results of the study that led to the first approval by the U.S. Food and Drug Administration (FDA) of the excimer laser for the correction of nearsightedness in the United States. Hersh was also medical monitor of the study that led to approval of corneal collagen crosslinking for the treatment of keratoconus.
Raymond Mark Stein, MD, FRCSC, DABO, is a Canadian ophthalmologist. He practices refractive and cataract surgery. He is the medical director of the Bochner Eye Institute in Toronto, Ontario and Chief of Ophthalmology at the Scarborough General Hospital.
Sheraz Daya is a British ophthalmologist. Daya founded the Centre for Sight in 1996, and works in stem-cell research and sight recovery surgery.
Mahipal S. Sachdev is an Indian ophthalmologist and the Chairman of Centre for Sight, a chain of Eye Hospitals in India. He is known as one of the pioneers of Phacoemulsification procedure in India. He is the co-author of A Practical Guide to Phacoemulsification, the first Indian book on the topic. The Government of India awarded him the fourth highest civilian honour of the Padma Shri, in 2007, for his contributions to Indian medicine. He is the Chairman Scientific Committee of the Intraocular Implant and Refractive Society of India, IIRSI.
Noel Alpins is an Australian ophthalmologist who developed the Alpins method of astigmatism analysis used in refractive, corneal, and cataract surgery, used in the research of LASIK.
Keiki R. Mehta, an Indian ophthalmologist, medical researcher and writer, is considered by many as the father of Phacoemulsification in India. He is the Chief Surgical and Medical Director at Mehta International Eye Institute, a Mumbai-based specialty eye hospital founded by him. He is known to be the first surgeon to perform a Radial keratotomy in India and is credited with the development of the first soft eye implant in the world, and the Keiki Mehta BP Valve Glaucoma Shunt, a medical implant used in the treatment of neovascular‚ congenital and uveitic glaucoma. He is a recipient of several honours including the Grand Honors Award of the National Eye Research Foundation, Chicago and the Triple Ribbon Award of the American Society for Cataract and Refractive Surgery. The Government of India awarded him the fourth highest civilian honour of the Padma Shri, in 2008, for his contributions to Medicine.
Burkhard Dick is a German ophthalmologist who has specialized in refractive and cataract surgery. With his many contributions to the scientific literature on this topic, he is considered one of the pioneers of employing the femtosecond laser in cataract surgery. In the "Power List 2023" ranking of the world's most influential ophthalmologists by the publication The Ophthalmologist, Burkhard Dick was listed among the Top 10.
Allon Barsam is a London-based ophthalmologist specializing in cataract surgery, refractive surgery and corneal and external eye disease. Barsam carried out the first human treatments of microwave keratoplasty.
Clear lens extraction (CLE), also known as refractive lensectomy or refractive lens exchange (RLE) is a surgical procedure in which clear lens of the human eye is removed. Unlike cataract surgery, where cloudy lens is removed to treat cataract, clear lens extraction is done to surgically correct refractive errors such as high myopia. It can also be done in hyperopic or presbyopic patients who wish to have a multifocal IOL implanted to avoid wearing glasses. It is also used as a treatment for diseases such as angle closure glaucoma.
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