Diet Extends Human Eye Sensitivity into NIR

A crowd-funded experiment promising to extend the human eye sensitivity to NIR reports an initial success. The group of researchers was able to extend it to 950nm. The key idea is to restrict vitamin A1 intake, while administrating vitamin A2 supplement at the same time. The vitamin A2 supplement is not readily available and it took the research group about a year to get it. After the two weeks of vitamin A2-rich diet, the group has registered biopotentials showing the retinal reaction on the 950nm LED flashes: