John Hovanesian, MD
Diana H. Kersten, MD

TLC Laser Eye Centers – Orange County
(866) 326-2010

24401 Calle de la Louisa
Suites 300 - 312
Laguna Hills, CA 92653

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LASIK Orange County – Serving patients seeking LASIK eye surgery in Orange County and the surrounding area

Located at Harvard Eye Associates’ Laguna Hills location in Orange County, TLC Laser Eye Centers of Orange County offers conventional, custom and bladeless LASIK. Conventional LASIK is the most common type of laser vision correction and has proven to be extremely effective for the correction of conventional vision errors.

Custom LASIK utilizes wavefront-guided technology and is selected by many patients to correct their vision. The curvature of the eye is unique for each patient and is like an eye fingerprint. During custom LASIK, a precise measure of the eye fingerprint is made, and an individualized laser beam is created to correct each eye.

Custom bladeless LASIK uses a computer-guided laser to create the corneal flap. Bladeless LASIK eliminates the use of the handheld microkeratome, for a 100-percent blade-free LASIK experience.

Our Orange County LASIK center offers industry-leading technology performed by the area’s most respected LASIK surgeons. Dr. John Hovanesian and Dr. Diana Kersten, along with the TLC Laser Eye Center staff, meticulously evaluate each patient to determine the best option for laser vision correction surgery.

To determine whether you are a candidate to eliminate your dependence on glasses or contact lenses, contact TLC Laser Eye Centers – Orange County at (866) 326-2010 to schedule a free LASIK evaluation, or book online at

More About the Physicians at TLC Laser Eye Centers

John Hovanesian, MD, joined Harvard Eye Associates in 1999 after spending two years as a visiting assistant professor at the UCLA Jules Stein Eye Institute, during a fellowship specializing in laser, cataract and corneal surgery. At UCLA, he received international acclaim for his research in optimizing the quality of vision after laser surgery.

Dr. Hovanesian completed his undergraduate education in three years, graduating summa cum laude from the University of Michigan’s Honors Chemistry Program, where he was named to the Phi Beta Kappa Honor Society in his sophomore year. In medical school, he published research on improving the vision of glaucoma surgery patients at the University of Michigan’s Kellogg Eye Center. In his ophthalmology residency at Henry Ford Hospital in Michigan, he was elected Resident of the Year and appointed chief resident by his faculty.

Today, Dr. Hovanesian is a recognized innovator and teacher of eye surgery. He is the editor of the American Academy of Ophthalmology’s primary source regarding new developments in cataract surgery, the Ophthalmic News and Education network. He is also an editorial board member for Ocular Surgery NewsCataract and Refractive Surgery TodayAdvanced Ocular Care and Premier Surgeon and is one of two ophthalmologists on the editorial board of Primary Care Optometry News.

He has been invited to lecture on five continents. He has two textbooks in publication: one on the subject of advanced technology in cataract surgery and one on the treatment of pterygium. His dozens of surgical technique videos and research articles are widely referenced in other publications and lectures. He is listed among the world’s top 250 eye surgery innovators by the journal Premier Surgeon.

Diana H. Kersten, MD, has been a busy surgeon with Harvard Eye Associates since 1988. She is devoted to excellent patient care and has a loyal following of patients throughout Orange County and Southern California. Since joining Harvard Eye Associates, she has performed many thousands of LASIK procedures and cataract surgeries, as well as numerous advanced refractive techniques to treat myopia, hyperopia and astigmatism.

She trained in ophthalmology at the Massachusetts Eye and Ear Infirmary, Harvard University, finishing in 1986. She was the 12th woman to complete this prestigious training program. Her internship was at UC San Francisco, Mt. Zion Hospital. A native of Iowa, she graduated from the University of Iowa, summa cum laude in three years, and was named a member of Phi Beta Kappa in 1978. She matriculated from the University of Iowa College of Medicine in 1982.

For two years following her training, Dr. Kersten worked with nonprofit groups combatting blindness in developing countries. For one year, she was with Project Orbis, the flying eye hospital, teaching and bringing modern eye surgery to many countries in Africa and Eastern Europe. She has also worked with the SEVA Foundation, Liga International, Cristoffel Blinden Mission and the Flying Doctors of Kenya. She has worked in over 20 countries, including Nepal, Kenya, St. Lucia, Nigeria, Mali, Sudan, Tunisia, Bosnia, Malta, Albania, Bulgaria, Georgia, Russia, Myanmar, Laos and Mexico. Recently, she provided free cataract surgery in Honduras and in Vietnam with Surgical Eye Expeditions.

Dr. Kersten believes in providing the best possible care to her patients through close personal attention. She is known for her thorough approach and meticulous attention to detail. She was an associate clinical professor at the UC Irvine Department of Ophthalmology, from 1992 until 2002. During this time, she and her partners were given the award of Teacher of the Year by the UCI residents. Dr. Kersten is board certified in ophthalmology by the American Board of Ophthalmology and she is a Fellow of the American College of Surgery. She has lectured in many countries throughout the world and has published articles in ophthalmology journals.

Her professional affiliations include memberships in the American Academy of Ophthalmology, the American Medical Association, the California Medical Association, the American Society of Cataract and Refractive Surgery, the Orange County Medical Association and the Orange County Society of Ophthalmology.

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