Formerly Affiliated Physicians

Charles A. Cooper, M.D. (Retired)

Dr. Charles Cooper is a board-certified ophthalmologist specializing in infant and pediatric eye care. He also provides comprehensive eye care for adult patients. Dr. Cooper has practiced at Lynn Eye Medical Group since 1985, and also holds an academic appointment as an Assistant Clinical Professor of Ophthalmology at Jules Stein Eye Institute at UCLA. He has extensive experience in the management of medical and surgical diseases of the eyes in children. He has performed over 4,000 surgical procedures, including strabismus surgery (eye muscle surgery) in children and adults, nasolacrimal duct surgery (tear duct surgery) and surgery to correct disorders of the eyelids in children. Conditions routinely treated in the office setting include refractive errors in children, amblyopia, the diagnosis of causes of visual loss identified in abnormal vision screening exams at school or by the child’s primary care doctor, and ocular injuries.

Dr. Cooper is a proud Aggie, having received his undergraduate degree in Genetics from the University of California, Davis. He earned his medical degree from the University of California, Irvine School of Medicine. He then completed his internship in Internal Medicine at St. Mary’s Hospital and Medical Center in San Francisco and his residency training in ophthalmology from the University of California, Irvine. Dr. Cooper also completed a fellowship in pediatric ophthalmology and strabismus at the Jules Stein Eye Institute at UCLA.

Dr. Cooper is a Fellow of the American Academy of Ophthalmology and a member of the American Association for Pediatric Ophthalmology and Strabismus. Dr. Cooper is also the past President and a previous charter member of the Ventura County Ophthalmology Society, and has served as an expert reviewer for the Medical Board of the State of California.

Dear Patients,

After 31 years of practicing Pediatric and Adult Ophthalmology at Lynn Eye Medical Group, I have decided to retire.  My last day seeing patients will be on November 17th, 2016.

My wife Nanci and I are both in good health and we are looking forward to starting the next phase of our lives. By the way, many of you have met Nanci.  She was one of my back office techs for the last seven years.  We will be moving to San Francisco.  Our daughter Sarah, her husband Eric and granddaughter Eliza live just a few blocks away from our new home in the City.  Our son Ben and his wife Kelley are in Tahoe, so we will be much closer to them as well. Also, Nanci and I are both from the Bay Area.  After 40 years in Southern California, we will be returning to our roots.

I hope to pursue some new interests, get my golf score under 100 and live a life that is much less structured. If an opportunity presents itself, I would like to do a little part time teaching and provide care for indigent patients.

I have known many of you for a long time. I am very proud of the number of second generation patients I see. I deeply appreciate the trust you have placed in me in allowing me to take care of you and your family. It is a responsibility that I have taken very seriously my entire career.  I hope that I was able to live up to your expectations.

There are several fine ophthalmologists at Lynn Eye that are ready to assume your care, including the new Pediatric Ophthalmologist from Johns Hopkins, Dr. Anya Trumler-Sebring.  Please call me at the office or email me at [email protected] if I can help you make this transition or answer any questions.

All the best to each of you,
Charles Cooper, MD


M. Gene Matzkin, M.D.

Dr M Gene Matzkin | Ophthalmologist Thousand Oaks CA | Ventura County CA

Dr. Matzkin graduated from the UCLA School of Medicine and received his ophthalmology training at UCLA’s Jules Stein Eye Institute and Harbor General Hospital. He then entered the U.S. Navy and as a Lieutenant Commander, was the sole ophthalmologist on Guam for two years. Since 1974, he has been in private practice with the Lynn Eye Medical Group, primarily interested in general ophthalmology with a focus in cataract surgery.

He has been active in teaching eye surgery, and since 1990 has been Associate Clinical Professor of Ophthalmology at the Jules Stein Eye Institute, receiving the UCLA Department of Ophthalmology Senior Honor Award in 2000.


Dr. Matzkin’s Retirement Letter


Adam Martidis, M.D.

Dr Adam Martidis | Ophthalmologist Thousand Oaks CA | Ventura County CA

Adam Martidis, M.D. earned his medical degree at the University of Pittsburgh. Following graduation, he completed a residency at Indiana University where he served as chief resident in his final year. During his residency, he earned the Grayson Leadership Award, an honor given to only three prior graduating residents in the history of the training program. He was also awarded a vitreoretinal fellowship at the New England Eye Center in Boston. Upon completion of this two-year fellowship, he accepted an academic position at Wills Eye Hospital in Philadelphia, an internationally recognized eye institution. Here, Dr. Martidis trained numerous residents and retina fellows in surgical and medical retinal diseases in one of the largest and most highly regarded programs in the nation. He has participated in multiple research studies, including personal projects and national clinical trials.


Wanda D. Hu, M.D.

Dr Wanda Hu | Ophthalmologist Thousand Oaks CA | Ventura County CA

Wanda Hu, M.D. was awarded her medical degree in 2009 from the UCSD School of Medicine. After her Internship in Internal Medicine at Kaiser-Los Angeles Medical Center, she completed her Ophthalmology Residency at the Stein Eye Institute, UCLA.

She then underwent a Clinical Glaucoma Fellowship training at the Wills Eye Hospital in Philadelphia, PA.

Dr. Hu has authored and co-authored numerous peer-reviewed articles, textbook chapters, and research projects that were presented at annual meetings of national ophthalmological organizations.

Dr. Hu specializes in the diagnosis, therapy and surgical intervention of the glaucomas and related disorders.

Her specialty areas are Glaucoma Consultation, Laser and Surgical Management of Glaucoma, Cataract Surgery, and Comprehensive Adult & Adolescent Eye Care.

She is a Member of the American Academy of Ophthalmology and the American Glaucoma Society. Dr. Hu speaks conversational Spanish and Mandarin Chinese.


Joseph Chen, M.D.

Dr Joseph Chen, Ophthalmologist in Ventura, Oxnard, Thousand Oaks CAJoseph Chen, M.D. was awarded his Doctorate in Medicine by Baylor College of Medicine, Houston, Texas in 2009.  After the completion of his Internship at the University of Texas, Houston, he returned to Baylor College of Medicine to complete his Residency in Ophthalmology.

He then completed a Clinical Fellowship in Glaucoma at the John Moran Eye Center at the University of Utah. He has co-authored several abstracts and has published ophthalmology research papers in journals including the American Journal of Ophthalmology and the Journal of the American Academy of Dermatology.

His specialty skills include the medical, laser and surgical treatment of glaucoma as well as cataract and anterior segment surgery.  He has a particular interest in cutting edge surgical and laser management of glaucoma, including minimally invasive glaucoma procedures, trabeculectomy, glaucoma drainage implants, and cyclophotocoagulation procedures. He is happy to share his expertise in glaucoma and cataract care with the Ventura County community.

Professional memberships:

  • American Academy of Ophthalmology
  • American Glaucoma Society
  • American Society of Cataract & Refractive Surgeons

Board Certified:

  • American Board of Ophthalmology

Dr. Chen has attending staff privileges at the following hospitals:

  • Community Memorial Hospital, Ventura
  • Ventura County Medical Center, Ventura

Services Dr. Chen provides include:

  • Comprehensive Ophthalmology (Adult and Adolescent)
  • No-Stitch and Laser Cataract Surgery
  • Complicated Cataract and Implant Surgery
  • Glaucoma Medical and Surgical Management
  • Laser Procedures with the Argon and YAG laser

Xiaolin (Lynn) Zhang, M.D.

Dr Xiaolin (Lynn) Zhang | Optometrist Thousand Oaks CA | Ventura County CA

Xiaolin (Lynn) Zhang, M.D. earned her medical degree in 2010 from Robert Wood Johnson Medical School in New Jersey.  She then completed a Transitional Year Internship at Lehigh Valley Health Network in Pennsylvania and her Ophthalmology Residency at University Hospitals Case Medical Center in Cleveland, Ohio.  During her final year of Residency, she served as Academic Chief Resident.  She returned to the East Coast to pursue a Fellowship in cornea, anterior segment, and refractive surgery at Albany Medical Center.

Dr. Zhang has given talks and presented posters from research projects at national Ophthalmology conferences.  She has also authored multiple peer-reviewed articles regarding corneal diseases.

Dr. Zhang specializes in medical and surgical management of anterior segment related disorders.    She is expertly trained to perform refractive, cataract, and corneal surgeries, including the newest partial thickness corneal transplant technique, Descemet’s membrane endothelial keratoplasty (DMEK), for treatment of Fuchs’ Dystrophy.

Dr. Zhang is a Member of the American Academy of Ophthalmology, the American Society of Cataract and Refractive Surgery, and the Cornea Society.  She is fluent in Mandarin.


Dr. Sanket U. Shah

Dr. Sanket U. Shah is a board certified Ophthalmologist with a specialization in medical and surgical diseases of the retina and the vitreous.  He received his medical degree from the Seth G. S. Medical College and King Edward Memorial Hospital in Mumbai, India.  He spent two years pursuing a research fellowship in ocular oncology at the Wills Eye Hospital in Philadelphia, PA; and a second research fellowship in retina at the Jules Stein Eye Institute at UCLA in Los Angeles, CA.  His training includes an internship in internal medicine at the Albert Einstein College of Medicine – Jacobi Medical Center in Bronx, NY, followed by residency in Ophthalmology at the Indiana University School of Medicine in Indianapolis, IN, where he served as the chief resident and received several awards.  He then completed his fellowship training in vitreoretinal surgery and medical diseases of the retina at the prestigious Jules Stein Eye Institute at UCLA in Los Angeles, CA.

Dr. Shah is Board certified by the American Board of Ophthalmology.  He is a member of the American Academy of Ophthalmology and the American Society of Retina Specialists.  He has served as a co-investigator on several national clinical trials and participated in numerous research projects spanning topics including diabetic retinopathy, vitreoretinal interface abnormalities, macular degeneration, automated retinal image analysis, optical coherence tomography, uveal melanoma, and retinoblastoma.  He has received the National Eye Institute travel grant to present his research. He has over 35 peer-reviewed publications in national and international journals, 1 book chapter, and several abstracts, oral, video and poster presentations to his credit.  He has served as a reviewer for articles in peer-reviewed journals such as Ophthalmology and the American Journal of Ophthalmology.

Dr. Shah’s full list of publications is available here >>.

Honors & Awards:

  • Sir J.R.D. Tata and Ratan Tata scholarships during medical school (2006, 2008, 2009)
  • Indian Council of Medical Research studentship awards (2007, 2008)
  • Award for the best article on EyeWiki in the Retina and Vitreous category titled Vitreomacular Traction Syndrome (2013)
  • Best Resident Research Paper Award, Indiana University Department of Ophthalmology (2015)
  • Merrill Grayson Leadership Award, Indiana University Department of Ophthalmology (2016)
  • David May II Fellowship Award, UCLA Stein Eye Institute (2016)
  • Abe Meyer Memorial Fellowship Award, UCLA Stein Eye Institute (2017)

Dr. Shah Hospital Affiliations:

  • Community Memorial Hospital, Ventura
  • Ventura County Medical Center, Ventura
  • Los Robles Hospital and Medical Center, Thousand Oaks

Services Dr. Shah provides include management of:

  • Retinal vein occlusion, Retinal tears and holes,
  • Retinal detachment, Retinal dystrophy & degeneration
  • Vitreous hemorrhage
  • Macular hole, Macular pucker (Epiretinal membrane)
  • Macular degeneration
  • Diabetic retinopathy
  • Dislocated lens
  • Aphakia
  • Uveitis

Dr. Shah speaks conversational Spanish, and is fluent in Hindi, Gujarati, and Marathi.


Maria Choudhary, M.D.

Dr. Maria Choudhary is a board certified ophthalmologist with advanced training in eyelid and facial plastic surgery. She completed her ophthalmology training at the prestigious Cleveland Clinic, Ohio. She then went on to complete a very competitive 2 years fellowship at the Center for Facial Appearances in Salt Lake City, Utah in Oculofacial and Orbital surgery accredited by the American Society of Ophthalmic Plastic ad Reconstructive Surgery (ASOPRS). She has a keen interest in research and has authored several peer reviewed scientific papers and book chapters.

During her free time Dr. Choudhary enjoys spending time with her husband who is an Infectious Disease specialist and their 7 year old son. They enjoy the outdoors and traveling including taking mission trips.

Dr. Choudhary specializes in functional eyelid, orbital, lacrimal and facial reconstructive procedures as well as aesthetics.

Services Offered:

  • Eyelid surgery (droopy/baggy eyelids or eyelid retraction)
  • Droopy eyebrows
  • Tearing evaluation and management
  • Thyroid Eye Disease
  • Eyelid and Skin Cancers
  • Eyelid and orbital trauma including fractures
  • Cosmetic surgery of the forehead, mid and lower face
  • Non-surgical cosmetic procedures including BOTOX, KYBELLA, facial fillers and Chemical Peels. Facial fillers for volume rejuvenation (under eyes, cheeks, lips)

Her list of publications can be found here.


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