Eye & Vision Exams

Eye Exam Image

At Marilyn K Kosier M.D., Inc., we strive to provide comprehensive, primary eye care for the whole family. Preventative and routine eye exams are important to maintaining good eye health. Often, eye and vision problems do not have obvious symptoms or signs, but are easily diagnosed by a licensed ophthalmologist. By diagnosing eye and vision conditions early on, our ophthalmologist is able to provide treatment options and, in many cases, restore vision or prevent vision loss. The American Academy of Ophthalmology recommends yearly or bi-yearly eye and vision exams, depending on whether you are at-risk or not.

Eye Exam and Consultation

During an eye exam, Dr. Marilyn Kosier will ask you questions about any symptoms or issues you are experiencing, medications your are currently taking, any blurry vision, your work environment, and your overall health. Family history and previous eye or vision conditions will also be discussed during this part of the examination. Dr. Kosier will consider this information when determining any treatments or recommendations.

Vision Testing

Regular vision testing and evaluations ensure that you always have the clearest vision possible. Our Lancaster ophthalmologist provides regular vision acuity tests as part of a comprehensive eye exam. Dr. Kosier will measure how each eye is seeing by using a wall eye chart and a reading eye chart. The results of these tests are portrayed as a fraction, with 20/20 being the standard for normal distance and reading vision. Depending on the results of your vision test, Dr. Kosier may prescribe corrective glasses or other treatment.

Eye Function Testing

In addition to vision testing, an eye exam in our Lancaster office includes testing eye functionality. Our ophthalmologist performs several tests to evaluate depth perception, color vision, eye muscle capabilities, peripheral vision, and responsiveness to light. Several other simple tests are completed to determine whether the eyes are focusing, moving, and working together properly. The test results enable Dr. Kosier to diagnose any underlying conditions that may be impairing the eyes ability to focus or work together.

Eye Health

As part of a comprehensive eye exam, our Lancaster ophthalmologist examines the overall health of the eye through a visual examination and tonometry. Dr. Kosier evaluates eye health by visually inspecting the eye and eyelids using magnification and a bright light. To examine the internal structures of the eye, we may dilate the pupils. Increased eye pressure may be an indicator of glaucoma, so we utilize tonometry to measure eye pressure. After completing these short tests, Dr. Kosier reviews the results and discusses any necessary treatment options with you. Contact us at 740-654-8424 today to schedule a comprehensive eye exam.


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7:30 am-4:00 pm


7:30 am-4:00 pm


7:30 am-4:00 pm


7:30 am-4:00 pm


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  • "At our office we offer comprehensvie eye exams. Dr. Kosier does eye evaluations for Diabetes, Glaucoma, Cataracts, Macular Degeneration, Dry Eye, Eye Lids, and much more. Please call our office to schedule an exam. We look forward to meeting you."