A colorectal surgeon is a medical professional who is experienced with the colon and rectum and is capable of diagnosing and treating diseases that affect these parts of the body. They treat illnesses and diseases that range from mild to severe, and they sometimes work with other specialists and doctors to determine how to treat their patients properly. They are sometimes referred to as proctologists.

Optometry is a medical profession that deals with the eyes and eye health. Optometrists can look at patients’ eyes to address abnormalities or irregularities as well as diagnose diseases of the eye. These doctors may also refer patients to surgeons who can correct eye problems. While optometrists do also focus on helping people find corrective lenses that can improve their vision, their focus extends far beyond glasses and contacts to include overall eye health, including management of eye diseases.