<unk>  is a rare autosomal dominant disorder, which affects the development of the teeth, eyes, and abdominal region.<unk>  is part of the so-called iridocorneal or anterior segment dysgenesis syndromes, which were formerly known as anterior segment cleavage syndromes, anterior chamber segmentation syndromes or mesodermal dysgenesis. Although the exact classification of this set of signs and symptoms is somewhat confusing in current scientific literature, most authors agree with the classification cited here.<unk>  Anomaly is known as the development of a posterior embryotoxon, associated with strands of the iris adhered to a Schwalbe line that has been displaced anteriorly, which when added to glaucoma is called<unk>  Syndrome.<unk> 's Anomaly is defined by a universe of congenital anomalies of the iris, such as iris hypoplasia, corectopia or polycoria. When systemic findings are added to<unk> 's anomaly, such as bone, facial and/or dental defects, it is known as<unk>  syndrome. The combination of both entities gives rise to the<unk><unk>  Anomaly when there are no systemic abnormalities and<unk>  when there are.<unk> , is a rare disease that affects the eye bilaterally, with an estimated prevalence of 1/200,000 people, without gender predilection, and is characterized by autosomal dominant inheritance with complete penetrance of variable expressivity. The genes that have been identified in approximately 50% of cases are PITX2 and FOXC1. Given the important hereditary factor, it is important to evaluate the most direct members of the family. To explain the ocular alterations, there is a theory of the mechanism postulated by Shields et al, which implies an arrest in the migration of neural crest cells towards the third trimester of gestation, which leads to the persistence of primordial endothelial tissue in the iris and anterior chamber angle. Contraction of these membranes after birth lead to the progressive changes seen in some patients. This primordial endothelium also generates an excessive and atypical basement membrane, especially near the limbal corneal junction, which accounts for the prominent Schwalbe line. In the case of secondary glaucoma, it would be the consequence of dysgenesis in the chamber sinus.
Axenfeld–Rieger syndrome
Zunich–Kaye syndrome
Pelizaeus–Merzbacher disease
Kufor–Rakeb syndrome
Hurler–Scheie syndrome
TORCH syndrome
Joubert syndrome
Cornelia de Lange syndrome