Tunnel vision and Visual defect

Tunnel vision noun - Visual impairment involving a loss of peripheral vision.

Visual defect and tunnel vision are semantically related. In some cases you can use "Visual defect" instead a noun phrase "Tunnel vision".

Visual defect noun - Impairment of the sense of sight.

Tunnel vision and visual defect are semantically related. Sometimes you can replace phrase "Tunnel vision" with "Visual defect", this phrases are similar.