The Visor has a Durability of 600 and absorbs 85% of physical damage. They also reduce vision to a smaller rectangle, but for Wagstaff they remove blurriness. For other characters beside Wagstaff, their vision will be compromised by both the rectangle and blurriness, but they can still benefit from the damage absorption. They can be given to a Pig or Bunnyman to wear, which will provide them with the damage absorption effect.
Since Visor's durability only decreases when taking damage, it can be used to negate Wagstaffs blurry view as long as the player avoids taking damage while wearing it.