[Ocular anomalies in Alagille's syndrome].

The authors examine a family, in which two brothers were affected by a severe expression of arteriohepatic dysplasia (ADH, Alagille syndrome), an autosomal dominant disorder associated with intrahepatic cholestasis, characteristic facial appearance, congenital embryotoxon. One of these two cases presented a keratoconus and both had retinal pigmentary degeneration with pigment clumping. The father showed a benign expression of ADH, including the characteristic facial appearance and posterior embryotoxon. Another brother presented only retinal pigmentary abnormalities and a bilateral arcus senilis-like corneal opacity, without any other clinical sign of ADH. The presence of posterior embryotoxon in all the cases of Alagille syndrome confirms that this sign is a hallmark of ADH, also in its benign expression.