Dr. Derryberry has the highest level of credentialing for an Optometrist. He is a Glaucoma Specialist and Therapeutically Certified which means he can do much more than general eye exams.
Remember that early signs of diseases, such as diabetes, hypertension, and elevated cholesterol levels can often be detected through an eye exam. Even patients with 20/20 vision can suffer from underlying eye problems. By early detection of these underlying health problems, you can seek early treatment, possibly improving your overall health along with your vision.