Dr. Ronald N. Gaster MD, Ophthalmologist

Dr. Ronald N. Gaster MD


9001 Wilshire Blvd. 306 Beverly Hills CA, 90211



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

Male English, Spanish, French
Dr. Ronald N. Gaster MD
Dr. Ronald N. Gaster MD's Expert Contributions
  • 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

Areas of expertise and specialization

Femtosecond Laser-Assisted Cataract Surgery, Corneal Transplantation, Corneal Cross-Linking for Keratoconus, Intacs, Pterygium Surgery, Dry Eye Disease Treatments including Intense Pulsed Light (IPL)Corneal cross-linking, Laser-assisted cataract surgery, corneal diseases and transplantation, LASIK, SMILE, PRK, pterygium surgery, INTACS, Dry Eye Disease treatments including Intense Pulsed Light (IPL)

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 

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  


  • 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

Ronald N. Gaster, MD, FACS/Gaster Eye Center

9001 Wilshire Blvd. 306 -
Beverly Hills, CA 90211
Get Direction
New patients: 310-425-3938

Ronald N. Gaster, MD, FACS/Gaster Eye Center

18426 Brookhurst St. 103 -
Fountain Valley, CA 92708
Get Direction
New patients: 855-393-3622

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Patient Experience with Dr. Gaster


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Dr. Ronald N. Gaster MD has a rating of 5 out of 5 stars based on the reviews from 8 patients. FindaTopDoc has aggregated the experiences from real patients to help give you more insights and information on how to choose the best Ophthalmologist in your area. These reviews do not reflect a providers level of clinical care, but are a compilation of quality indicators such as bedside manner, wait time, staff friendliness, ease of appointment, and knowledge of conditions and treatments.

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