Cryptophthalmos is a congenital failure of lid and eye separation and development. In most cases, cryptophthalmos is inherited as an autosomal recessive trait, which may include mental retardation, cleft lip or palate, cardiac anomalies, or genitourinary abnormalities. The eyelids may be colobomatous, with the colobomatous lid fusing with the peripheral cornea or conjunctiva (incomplete cryptophthalmos; Fig. 1-27). Complete cryptophthalmos is a total absence of normal eyelids and lid fold, with the eye covered by skin that is adherent to an abnormal cornea. The cornea is often thin, being replaced by a
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