A colonoscope is a medical instrument used by doctors to examine the inner lining of the large intestine, also known as the colon. It is a long, flexible tube equipped with a light and a camera at its tip, allowing for clear visualization of the colon's surface. This procedure, called a colonoscopy, helps detect abnormalities such as polyps, tumors, or signs of colorectal cancer. During a colonoscopy, the patient is usually sedated for comfort. The doctor gently inserts the colonoscope through the rectum and advances it into the colon. This procedure is essential for early detection and prevention of digestive disorders and is often recommended for individuals over the age of 45 or those with a family history of colorectal issues.