Optometrists don't just do contact lenses and eyeglasses. They should be knowledgeable in all aspects of healthcare.

In this One Focus, Dr. Brianna Rhue speaks with Dr. Kerry Gelb, founder of "Open Your Eyes" podcast, who stresses this importance. From nutrition to systemic disease, optometrists can have a big impact on their patients' lives, and help combat mortality and morbidity rates. The more knowledgeable about eye health, the better the doctor. The better the doctor, the better the eyecare practice.