Through the Looking Glass: Thoughts about treating tunnel vision with Image Minification. A narrow window of opportunity

Henry Greene, OD, FAAOLow Vision Resources, Tunnel Vision

SightScope 0.5x Field Expander for tunnel vision mounted on Ocutech Sleek frame

Perhaps the most challenging visual impairments to address in low vision care are disorders affecting peripheral vision such as RP, Choroideremia and late stage glaucoma.  Peripheral vision is associated with motion detection and seeing in low illumination. As a result, and as we know, individuals with constricted visual fields will have difficulty traveling independently as well as having very reduced ‘night vision.’ Tunnel vision functional issues The functional challenges encountered with tunnel vision usually fall