John S. Lean, M.D., F.R.C.S.

John S. Lean, M.D., F.R.C.S.John Lean M.D., F.R.C.S., received his Doctor of Medicine degree at New College, Oxford University in England and completed his internship at both University College Hospital and Greenwich Hospital in 1973. Dr. Lean finished his residency at the world renowned Moorfields Eye Hospital in London followed by a vitreoretinal surgical and medical fellowship at Moorfields. Dr. Lean was recruited to the University of Southern California Doheny Eye Institute in 1982, where he served as an Associate Professor until 1990. During his tenure at the Doheny Eye Institute, Dr. Lean authored numerous papers and book chapters and became a leading expert in the surgical management of complex retinal detachments. He has been honored with numerous visiting professorships and has spoken all over the world on various retinal conditions including diabetic retinopathy, complications of cataract surgery and age-related macular degeneration. Dr. Lean has been in private practice in Orange County since 1991. He is also a member of the prestigious Macula, Retina and Gonin societies. Dr. Lean sees patients at the Laguna Hills office.




MEDICAL SCHOOL Oxford University
Oxford, England
INTERNSHIP University College Hospital
London, England; Greenwich Hospital, London, England
London, England
London, England

Professional Memberships

  • Royal College of Surgeons
  • Retina Society
  • American Society of Retinal Specialists
  • Macula Society
  • Club Jules Gonin


dale pratte

Dr Lean is amazing. He sees issues that other doctors miss . I just started going to Dr. Lean the past 3 months my vision has already started to get better .There are lots of doctors that can give you a shot ,but not all them care or understand What macular degeneration is . Just recently I went in for a shot anticipating the same drug that I’ve been receiving for years Dr Lean wasn’t happy with the results of the last shot so as he explain to me sometimes you have to find the right key to the lock , he now has me on a different drug . I highly recommend Dr. Lean.

Lois Halbert

I don’t know what to say but the doctors, techs, and staff are caring and competent. They are terrific. More than a 5 star. Dr. Lean saved my eyesight in 2000 and has been watching over me regularly ever since. Yesterday I had a strange occurrence in my left eye and Dr. Eifrig (in Dr. Lean’s absence) stepped up immediately to help.

I have been going to Dr. Lean for 15 years for Macular Degeneration. He has been very helpfull and saved my vision for 15 years.