Vision — Tunnel

: A genetic disorder that causes the breakdown and loss of cells in the retina.

Tunnel vision, or the loss of peripheral vision, is a condition where your visual field is restricted to a small central area, much like looking through a tube or binoculars. It typically occurs when the "rod" cells in the retina, which are responsible for side and night vision, stop functioning correctly. Tunnel Vision

Beyond biology, "tunnel vision" also describes a physiological response to extreme stress or intense focus: : A genetic disorder that causes the breakdown

: Difficulty seeing objects or motion off to the side. or the loss of peripheral vision