The subject gains the ability to see 60 feet even in total darkness. Darkvision is black and white only but otherwise like normal sight.

Darkvision can be made permanent with a permanency spell.

Darkvision, Communal

School transmutation; Level alchemist 3, antipaladin 3, ranger 4, sorcerer/wizard 3

Casting Time 1 standard action
Components V, S, M (either a pinch of dried carrot or an agate)

Range touch
Target creatures touched
Duration 1 hour/level
Saving Throw Will negates (harmless); Spell Resistance yes (harmless)

This spell functions like darkvision, except you may divide the duration in 1-hour intervals among the creatures touched.

Darkvision, Greater

Source Ultimate Magic

School transmutation; Level alchemist 4, antipaladin 4, ranger 4, sorcerer/wizard 4

Casting Time 1 standard action

This spell functions as darkvision, except the target’s darkvision has a range of 120 feet.