Optometry What is Optometry? Optometry is a health care profession concerned with the health of the eyes, including vision and visual systems. Optometrists are trained to prescribe and fit lenses to improve vision, and to diagnose and treat various eye diseases. What Do Optometrists Do? Optometrists examine eyes for not just vision problems, but eye health problems as well. They can fit and prescribe for both glasses and contact lenses. If you start noticing that your vision is becoming blurry or you are having a difficult time with reading or maintaining focus and optometrists can help you.