Changes

In the pilothouse, use blue-green (507 nm) or turquoise (495 nm) LEDs for night vision. Eight percent of males are red-green deficient [8], and will be groping blindly with low-level red or green night vision lights. (Women have an extra strong response to red-orange.) Even a higher percentage may have temporary alterations in perception of blue under varying conditions. Most people over 45 suffer from reduced light transmission into the eye.