In AD&D 2e, the Robe of Eyes has this description:
This valuable garment appears to be a normal robe until it is put on. Its wearer is able to "see'' in all directions at the same moment due to scores of magical "eyes'' which adorn the robe. The wearer also gains infravision to a range of 120 feet, and the power to see displaced or out-of-phase objects and creatures in their actual positions. The robe of eyes sees all forms of invisible things within a 240-foot normal vision range (or 120 feet if infravision is being used).
Invisibility, dust of disappearance, robes of blending, and improved invisibility are not proof against observation, but astral or ethereal things cannot be seen by means of this robe. Solid objects obstruct even the robe's powers of observation. Illusions and secret doors also can't be seen, but creatures camouflaged or hidden in shadows are easily detected, so ambush or surprise of a character wearing a robe of eyes is impossible.
Would a robe of eyes be able to see into an area affected by a Darkness 15′ radius spell? Note that that spell is alteration magic, not illusion, but also states that infravision does not penetrate.