A prosthesis capable of being worn on the eye of a wearer having a convex surface and a concave surface. The prosthesis is configured to widen the natural palpebral fissure of a wearers eye. The prosthesis may have an aperture widening zone located on the convex surface and including an area of increased surface friction. A method of widening the natural palpebral fissure of a wearers eye is also provided.
