a doctor-directed procedure for the regenerative healing of the optical surface with an amniotic membrane. this highly effective procedure is performed when traditional treatments fail in the pursuit of resolving acute, subacute, and chronic ocular surface disease (corneal epithelial defects, neurotrophic keratitis, corneal ulcer or erosion, acute chemical or thermal burns, herpetic keratitis, exposure keratitis, or resistant dry eye or keratoconjunctivitis sicca).