3M™ Opticlude™ Orthoptic Eye Patches are used for treating childhood strabismus and amblyopia. Worn over the preferred eye, the eye patch encourages the weaker eye to function. The patches have a non-woven microporous backing which lets the skin breathe and function normally. The hypoallergenic adhesive is gentle to the child's skin. A central non-adherent pad prevents eye secretions sticking the pad to the eye.