An insidious, chronic and recurrent disorder, characterized by small and elevated oval corneal intraepithelial, whitish-gray opacities, extending to the entire anterior surface of the cornea of both eyes. Corneal lesions show a tendency for the central pupillary area distribution with mild or absent conjunctival inflammation and no association to systemic disease. [ MONDO:cjm https://eyewiki.aao.org/Thygeson%C2%B4s_superficial_punctate_keratitis ]