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
OphthalmologyAmerican Board of OphthalmologyABO
Dr. Ronald N. Gaster MD's Expert Contributions
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
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
- 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
- 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
- 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
- Kings County Hosp Ctr, Ophthalmology; Univ Of Chicago Hosps, Ophthalmology; Univ Ca San Diego Med Ctr, General Surgery
- University of California At San Diego 1975
- University of Chicago, Section of Gastroenterology and Nutrition 1978
- Manhattan E E T Hospital 1979
Charities and Philanthropic Endeavors
- Medical missions to Africa, South America, China, India, Nepal
Dr. Ronald N. Gaster MD's Practice location
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Patient Experience with Dr. Gaster
- Eye Twitching: Causes and How to Stop It
What is eye twitching?While it may seem like a normal experience of the eye, eye twitching could become irritating and could be a cause for concern when it persists for a long period of time and with higher frequency. In medical terms, eye twitching is known as blepharospasm, which is defined as an...
- Cataract Surgery: What is an Intraocular Lens?
When the eye’s natural lenses are removed during cataract surgery, they are replaced by artificial lenses known as intraocular lenses (IOLs). They are also used to correct a patient’s vision during a surgical procedure known as refractive lens exchange.Intraocular lenses are FDA-approved and...
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Herpes Simplex Virus 1 (HSV-1)HSV-1 or herpes simplex virus type 1 is a type of herpes simplex virus that causes cold sores. It is called "oral herpes" because it often causes sores around the mouth or on the lips. Cold sores are also called as fever blisters. However, the sores can also be found...
- What is Keratoconus?
Keratoconus is a non-inflammatory disorder of the eye where the cornea bulges outward like a cone. Thinning and bulging of cornea may result in blurring of vision and make the eye more sensitive to light. This disorder is seen in both the eyes and is common in people from 10-years-old to...
- How Long Will I Not Be Able to See After Undergoing Blepharoplasty?
Blepharoplasty, or eyelid surgery as it's commonly known, is performed to correct droopy upper and/or lower eyelids and under-eye bags. The surgery may be performed for functional or medical reasons. Functional blepharoplasty corrects problems related to upper eyelids that sag or droop enough to...
- What is Chalazion? Know about its Symptoms, Causes and Treatment
What is Chalazion?A chalazion is a benign and painless nodule which can occur in the upper or lower eyelid. It is common and is sometimes called a meibomian cyst or a tarsal cyst. The term chalazion (pronounced kah-la'-ze-on) originates from the Greek word which means a small lump. These nodules...
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