Deep Vision

(Races of Stone, page 137, DnD 3.5)

[Psionic]

Your mental focus helps you see farther with darkvision.

Prerequisite

Darkvision

Benefit

While you are psionically focused, your natural darkvision range increases by 30 feet.

Special

This feat affects only darkvision permanently gained from a creature's race, type, or class, not from impermanent effects such as the darkvision spell or goggles of night.