Table 1 Classification and Ophthalmic Features of Cryptophthalmos^2,3

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