corneal disorder thygeson superficial punctate keratopathy MONDO:0033816 Orphanet:519406 GARD:0022131 MEDGEN:1638070 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. UMLS:C4551636