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Table 1 Classification and Ophthalmic Features of Cryptophthalmos2,3

From: Reconstruction strategy in isolated complete Cryptophthalmos: a case series

Subtype Characteristics
Complete Failure of formation of the lid folds and globe results in skin extending from the brow to the cheek without identifiable adnexal structures; Ultrasound may identify a vestigial ocular structure or cyst within the socket
Incomplete An ill-defined upper eyelid is completely fused, often over an abnormally developed globe and a keratinized cornea
Abortive The upper lid is absent with a fold of skin extending from the forehead with variable degrees of adhesion/fusion to the underlying cornea; There is a normal lower lid (although often elongated) and relatively normal lower cornea. Variable degrees of microphthalmia may coexist