An eye exam may save your life. We can find everything from brain tumors to breast and lung cancers that have spread to the eye, says Joseph Pizzimenti, an optometrist and associate professor at Nova Southeastern University College of Optometry Eye Care Institute in Fort Lauderdale, Florida. Certain types of bleeding in the retina can signal leukemia. Eye doctors can diagnose brain tumors based on changes in a patient’s field of vision. Malignant melanoma can strike in back of the eye, and patients often don’t know it is there unless the cancer is in the very center of their field of vision, Pizzimenti says.
One of the first clues for type 2 diabetes may be a small amount of bleeding in the retina, which is a symptom of diabetic retinopathy. “I see patients every day who have this damage and who haven’t yet been diagnosed with diabetes,” says Pizzimenti. Left untreated, the condition can lead to blindness, but managing it cuts this risk in half. When diabetic retinopathy is detected early, lifestyle changes such as eating healthier and losing weight can help prevent further damage. Don’t skip your oral checkups either—these are 10 shocking illnesses dentists find first.
High blood pressure
Blood vessel damage, including weakening and narrowing of the arteries, can signal high blood pressure, says Jessica Ciralsky, MD, assistant professor of ophthalmology at Weill Cornell Medical College in New York City. Multiple large-scale studies have found links between heart disease and narrowing of small blood vessels in the retina, according to a paper in the American Journal of Medicine. These connections are particularly strong in people without traditional heart disease risk factors. When it comes to other body parts, these are the 10 surprising conditions your hands might predict.