The appearance of your artificial eye is important, but the reality of wearing an artificial eye day after day makes comfort the prime consideration to most wearers.  The statement, "the eye looks fine but it is not comfortable" is heard very often by the ocularist.  The most common cause of this problem is inadequate lubrication on the surface of the prosthesis resulting, in irritation to the eyelids as normal blinking occurs.  The SLP, Self-Lubricating Prosthesis was developed by Kevin V. Kelley, a Board Certified Ocularist from Philadelphia, PA, to solve this problem.