
Dr. Ronald N. Gaster MD
Ophthalmologist
9001 Wilshire Blvd. 306 Beverly Hills CA, 90211About
Ronald N. Gaster, M.D., F.A.C.S., is a board certified, fellowship trained ophthalmologist in private practice in Beverly Hills, and Orange County, California, and Clinical Professor of Ophthalmology at the Jules Stein Eye Institute, UCLA School of Medicine and the Gavin Herbert Eye Institute, University of California, Irvine. He is on staff at Cedars Sinai Medical Center in Los Angeles, Long Beach Memorial Medical Center, and the University of California, Irvine Medical Center. Dr. Gaster has been selected by his peers to Best Doctors in America since 1996, U.S. News & World Report's Top Doctors, Los Angeles Magazine's SuperDoctors, and other honors and awards including the American Academy of Ophthalmology Achievement and Honor Awards and was nominated as Clinician of the Year at U.C. Irvine Medical Center. Dr. Gaster is a past President of the Orange County Society of Ophthalmology. He is a graduate of Cornell University, U.C.L.A. School of Medicine and The University of Chicago. Recently, Dr. Gaster appeared as an expert and guest doctor on the national, Emmy award winning television show, “The Doctors.” He performed femtosecond laser-assisted corneal transplant and corneal cross-linking surgeries for the show and has made additional appearances. Dr. Gaster was one of the first 20 corneal surgeons internationally to perform Femtosecond Laser-Assisted Penetrating Keratoplasty and has continued research in that field. He additionally uses the femtosecond laser for cataract surgery, LASIK and other advanced corneal techniques. Dr. Gaster is also a pioneer in the field of refractive surgery, performing SMILE, LASIK and PRK, and was a Principal Investigator for the excimer laser. He is now studying and performing Corneal Cross-Linking in adults and adolescents to halt progression of keratoconus and other ectatic diseases and is a Principal Investigator for that study. He has a special interest in treating dry eye disease, including using Intense Pulsed Light (IPL). He has over 90 peer reviewed journal publications, abstracts and book chapters, including most recently in the “Journal of Refractive Surgery,” “British Journal of Ophthalmology,” “Cornea” and “Ophthalmology.” Recently, he was guest editor for the “International Ophthalmology Clinics.” Dr. Gaster also enjoys going on medical missions and has taught corneal and cataract surgery in Africa, China, India, South America and Nepal.
Education and Training
Cornell University BA 1969
UCLA School of Medicine MD 1973
University of California, San Diego Surgical Internship 1975
The University of Chicago Ophthalmology Residency 1978
Manhattan Eye, Ear and Throat Hospital Corneal and Refractive Surgery Fellowship 1979
Board Certification
OphthalmologyAmerican Board of OphthalmologyABO
Provider Details

Dr. Ronald N. Gaster MD's Expert Contributions
Who is not a good candidate for Lasik?
You are not a good candidate for LASIK if you have keratoconus, corneas that are too thin or irregular or scarred or too dry, or if you have cataracts and/or certain ocular or systemic diseases. You need to see a LASIK specialist and have your eyes evaluated before you have any type of refractive surgery, including LASIK. READ MORE
Do I have to buy glasses after an eye test?
No. Ronald N. Gaster, MD, FACS READ MORE
Cataracts?
Some HMO's are doing that, but I do not think that it is in your best interest. For example, if you get an infection in 1 eye (which is very serious), you might get the infection in both eyes (which could be disastrous). Therefore, I would not do that. The same goes for other potential complications. Ronald N. Gaster, MD, FACS READ MORE
At what age is surgery recommended for squint eye?
The answer depends on a number of factors, and your pediatric ophthalmologist can address them best for you. However, in many cases, the sooner the better -- along with other adjunct measures that your pediatric ophthalmologist should explain when you have your son examined. READ MORE
Are there any risks involved with a LASIK surgery?
There are risks with any surgery. However, the risks with LASIK, when done by an experienced LASIK surgeon, are relatively rare. You should be examined and discuss all the options and potential risks and complications with your LASIK surgeon -- not with anyone else. READ MORE
Expert Publications
Data provided by the National Library of Medicine- A comparison of anterior chamber and posterior chamber intraocular lenses after vitreous presentation during cataract surgery: the Department of Veterans Affairs Cooperative Cataract Study.
- Shortterm and longterm visual and astigmatic results of an opposing 10-0 nylon double running suture technique for penetrating keratoplasty.
- Altered expression of aquaporins in bullous keratopathy and Fuchs' dystrophy corneas.
- The effect of vitreous presentation during extracapsular cataract surgery on the postoperative visual acuity at one year.
- Outcomes in patients having vitreous presentation during cataract surgery who lack capsular support for a nonsutured PC IOL.
- Pseudophakic corneal edema: A review of mechanisms and treatments.
- The long-term effect of vitreous presentation during extracapsular cataract surgery on postoperative visual acuity.
- Suction loss during femtosecond laser incision for penetrating keratoplasty.
- Organic tissue glue in the closure of cataract incisions in rabbit eyes.
- Comparison of penetrating keratoplasty performed with a femtosecond laser zig-zag incision versus conventional blade trephination.
- Penetrating keratoplasty in active Acanthamoeba keratitis.
- Quantitative assessment of UVA-riboflavin corneal cross-linking using nonlinear optical microscopy.
- Comparison of corneal surface higher-order aberrations after endothelial keratoplasty, femtosecond laser-assisted keratoplasty, and conventional penetrating keratoplasty.
- Minimized endothelial cell loss in DSAEK (Descemet's stripping automated endothelial keratoplasty) using a 30-G needle insertion technique.
- Inflammatory cell responses to radial keratotomy.
Areas of expertise and specialization
Faculty Titles & Positions
- Clinical Professor, Ophthalmology Jules Stein Eye Institute, UCLA School of Medicine 2018 - Present
- Clinical Professor, Ophthalmology Gavin Herbert Eye Institute, U.C. Irvine School of Medicine 2008 - Present
Awards
- American Academy of Ophthalmology Honor Award 2006 American Academy of Ophthalmology
- American Academy of Ophthalmology Achievement Award 1988 American Academy of Ophthalmology
- Heed Fellowship 1978 Heed Foundation
- Best Doctors of America 1996 Best Doctors
- Castle Connolly Top Doctors 2018 Castle Connolly
- Orange Coast Magazine Top Doctors 2018 Orange County Medical Association
- Fellow, Royal Society of Medicine 2016 Royal Society of Medicine
Professional Memberships
- American Academy of Ophthalmology
- American College of Surgeons
- International Society of Refractive Surgery of the American Academy of Ophthalmology
- American European Congress of Ophthalmic Surgery
- The Cornea Society
Charities and Philanthropic Endeavors
- Medical missions to Africa, South America, China, India, Nepal
Areas of research
Corneal Cross-Linking for Keratoconus and Post-LASIK Ectasia; Femtosecond Laser-Assisted Corneal Transplantation; Laser-Assisted Cataract Surgery; LASIK, SMILE, PRK surgery; Pterygium Surgery with amniotic membrane graft; Dry Eye Disease Treatment including Intense Pulsed Light (IPL)
Dr. Ronald N. Gaster MD's Practice location
Ronald N. Gaster, MD, FACS/Gaster Eye Center
9001 Wilshire Blvd. 306 -Beverly Hills, CA 90211Get Direction
Ronald N. Gaster, MD, FACS/Gaster Eye Center
18426 Brookhurst St. 103 -Fountain Valley, CA 92708Get Direction
Dr. Ronald N. Gaster MD's reviews
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Nearby Providers
- Dr. Jamshyd David Karlin M.D.7230 MEDICAL CENTER DR STE 410 WEST HILLS CA 91307
- Dr. D. Michael Colvard M.D.5363 Balboa Blvd Encino CA 91316
- Sadiqa K. Stelzner MD1908 Santa Monica Blvd. Santa Monica California 90404
- Dr. Morgan Huang MD11333 N. Sepulveda Blvd. Mission Hills CA 91345
- Dr. Howard R Krauss M.D.2125 ARIZONA AVE SANTA MONICA CA 90404
- Dr. Afshin James Khodabakhsh MD23441 Madison St Torrance CA 90505
Nearest Hospitals
MIRACLE MILE MEDICAL CENTERl
6000 SAN VICENTE BLVD LOS ANGELES CA 90036FOUNTAIN VALLEY REGIONAL HOSPITAL & MEDICAL CENTERl
17100 EUCLID STREET FOUNTAIN VALLEY CA 92708ORANGE COAST MEMORIAL MEDICAL CENTERl
9920 TALBERT AVENUE FOUNTAIN VALLEY CA 92708