Choosing an Eye Doctor
Where do you go when you are having difficulty with your eyesight? Depending on the extent of the problem, your answer may vary. There are several different types of eye doctors read more
STATE-OF-THE-ART TECHNOLOGY AND PROCEDURES
THOROUGH EYE EXAMINATIONS
USING
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EYE HEALTH
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OUR STAFF
At Exton Vision Center, we offer all types of eye care services including routine vision examinations, medical testing, eyewear, and contact lenses. We are dedicated to providing our patients with prompt, professional and friendly service.
Our mission is "to serve our patients with the extensive knowledge and expertise we have gained through continuing education with the latest technology our industry has to offer, while continually offering them the finest in customer service."
Dr. Alan M. Cohen, O.D.
Founder
Pennsylvania State College of Optometry, Philadelphia Pennsylvania
Dr. of Optometry
Graduated 1958
Temple University, Philadelphia Pennsylvania
Biology, Pre-Med Program
September 1952 – May 1954
Association and Honors: Pennsylvania Optometric Association – 35 year member, American Optometric Association, Chester – Delaware County Optometric Association, Life Membership in Alumni Association of PCO, Gamma Omega Phi Chapter President, Honor Society of POC

Dr. Sarah Nissen, O.D.
Sarah Nissen, O.D. earned her Bachelor of Arts in science from
Dr. Nissen completed five clinical externships in different modes of optometric and ophthalmologic practice before becoming licensed in 2005. She worked closely with optometrists, refractive surgeons, cataract surgeons, oculoplastic surgeons, neuro-ophthalmologists, retinal surgeons, pediatric specialists and glaucoma specialists.
She is certified in the treatment and management of ocular disease by the state of
Mark Cohen, ABOC
Owner
Optical Manager
Mark, who is a certified optician, has been our optical manager since 1989. He has vast knowledge of vision plans and offers the most up to date technology in ophthalmic lenses. His dispensary carries the latest in fashion and designer frames. He also provides safety and sports wear as well as prescription sunglasses to help patients with all of their eyewear needs. Mark is also skilled in refractive surgery consultation, visual field testing, and contact lens training.
Dr. Nissen with patient Tyler Posten performing Biomicroscopy.
Dr. Nissen checks the internal health
of Tyler’s eyes.
Dr. Nissen with patient Tyler Posten using
Binocular Indirect Opthalmasascope that also checks the internal health of the eye.
Dr. Nissen performing exam with Refractor
to check Tyler’s eye prescription.
Patient Tyler Posten is treated in a comfortable setting with state of the art equipment.
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Eye Injuries
Walk-In for Emergency Care



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Dr. Allan Tocker, O.D.
Owner
Biography Coming Soon