This pair of thin, crystal lenses has a faint blue tint.

Eyes of truth grant you improved visual acuity, and can allow you briefly to see the world as it truly is. While worn, the lenses grant you a +5 competence bonus on Spot checks. This is a continuous effect and requires no activation.
In addition, you can activate the lenses to gain a true seeing effect (as the spell) for 1 round. This ability functions once per day.

Prerequisites: Craft Wondrous Item, true seeing.
Cost to Create: 2,500 gp (plus 500 gp for base item), 200 XP, 5 days.