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Eye Doctors & Staff

Meet the experienced and friendly doctors and staff who make Werner Optometry a proud provider of vision care products and services in El Cajon.


Dr. Rex A. Werner

Dr. Rex Werner has been practicing in San Diego since 1989. He is a graduate of the Southern California College of Optometry, and has worked with the Department of Public Health and the Veterans Administration as well as in private practice.

In addition to being able to treat refractive disorders, Dr. Rex is certified in the treatment and management of external eye diseases. He also works with Lasik eye surgeons who are the leading experts in their field. He does pre-operative evaluations, consults, and performs post-operative follow-ups teaming with the specialists to give his patients the best care possible. Having undergone Lasik surgery himself, Dr. Rex is able to explain firsthand the pros and cons of the procedure. He also fits all types of contact lenses, including toric, bifocal, and medically necessary soft and gas permeable lenses.

He is a member of the American Optometric Association, California Optometric Association, San Diego Optometric Association, Lyons’ Vision Clinic, Boy Scouts of America, Kiwanis Club, and American Sand Association.


Dr. R. Aaron Werner

Dr. Aaron is the newest member in a multi-generation legacy of optometrists. In 2008, he followed his father, grandfather, and great-grandfather in becoming a doctor of optometry.

A native of Rancho San Diego, Dr. Aaron enjoys living and working in this close-knit community. He graduated from Valhalla High School and studied at San Diego State before earning his doctorate from the Illinois College of Optometry. His extensive training encompassed all aspects of optometric care including vision therapy.

His passion is working with children and it shows on the faces of all the young patients who see him. Dr. Aaron is fluent in Spanish and is available for appointments Friday mornings.

Outside of the office, Dr. Aaron has a history of being involved with youth sports (wrestling, soccer, baseball, triathlons) and enjoys coaching his children’s teams. He is also an avid runner and triathlete, so feel free to honk and wave hi if you see him running or bicycling along the road.

Dr. Brittany McMurren

Dr. Brittany McMurren joined Werner Optometry in January 2017. In addition to offering comprehensive family eye care services, Dr. McMurren specializes in the diagnosis and treatment of dry eye disease. After earning her Bachelor of Science degree in Neuroscience at Cedar Crest College, Dr. McMurren received her Doctor of Optometry at the Illinois College of Optometry in Chicago. She is licensed to practice in California. During her graduate years, Dr. McMurren was trained in a variety of eye care fields, including pediatric vision development, anterior segment diseases, pre- and post-operative care for refractive surgery, complex contact lens fitting, sport vision therapy, keratoconus, and rehabilitation after traumatic brain injury.

Dr. Ronald M Watson

Dr. Ronald Watson joined Werner Optometry in October 2017.

Dr. Ron has been practicing general optometry in East County for 43 years. He graduated from the University of California Berkeley Optometry School and was in private practice in La Mesa before joining Werner Optometry. Dr. Ron specializes in comprehensive eye exams, all types of contact lens fittings, laser vision consulting and pediatric vision exams. Dr. Ron is a member of the American Optometric Association, California Optometric Association and the San Diego County Optometric Association. He was also a Boy Scout leader for 10 years. Dr. Ron has lived in East County for 40 years, has been married to Anita Watson for 42 years and together they have raised three children. He enjoys hiking, swimming, and especially spending time with his two grandsons.

Our Staff

Kathy: Office Manager

Angela: Patient Care Coordinator

Eva: Optician

Dawn: Optician

Shey’nelline: Optician

Brittany: Front Desk/Ophthalmic Technician

Erika: Ophthalmic Technician/Dry Eye Coordinator

Kristen: Ophthalmic Technician/Soft Contact Lens Coordinator