3. A subtle loss of vision
Patients experiencing this particular symptom may not be aware of it at all—let alone associate it with a brain tumor. They may not even notice an alteration in their vision quality until they continually bump into things on one side of the body related to the vision loss or have repeated car accidents on the side of the loss. “This particular symptom or impaired peripheral vision is known as bitemporal hemianopsia,” says Christopher Carrubba, MD, co-director for Medical Education at Med School Tutors. “We often see this symptom with pituitary tumors that compress the optic chiasm, or part of the visual pathway.” Brain cancer is just one of many surprising diseases eye doctors can diagnose first.