Can people with central vision loss point at targets using their head?

Researchers had 25 elderly patients with central vision loss and 26 sighted controls select 2-degree dots in VR using head-contingent cursors. Patients needed a larger activation zone (3.48° vs 1.32°) to match controls' speed, but both groups eventually reached similar selection times (~1.4 seconds) when the zone expanded. This suggests simple interface tweaks—bigger clickable zones—could make VR tools usable for people with vision loss.