Tunnel vision

Tunnel vision is the loss of peripheral vision with retention of central vision, which leaves the person with a constricted, circular, tunnel-like field of vision. It is described as a visual sign rather than a single disease, since the narrowing of the visual field can accompany a range of underlying eye or neurological problems. People affected can still see directly ahead but cannot take in objects off to the sides without turning the head or eyes. This record summarises the definition given by the reference source and is not medical advice.