Mondo Description Peters anomaly (PA) is a congenital corneal opacity disorder characterized by a central corneal leukoma that obstructs the pupil leading to visual loss as well as absence of the posterior corneal stroma and Descemet membrane.

Uniprot Description A form of anterior segment dysgenesis, a group of defects affecting anterior structures of the eye including cornea, iris, lens, trabecular meshwork, and Schlemm canal. Anterior segment dysgeneses result from abnormal migration or differentiation of the neural crest derived mesenchymal cells that give rise to components of the anterior chamber during eye development. Different anterior segment anomalies may exist alone or in combination, including iris hypoplasia, enlarged or reduced corneal diameter, corneal vascularization and opacity, posterior embryotoxon, corectopia, polycoria, abnormal iridocorneal angle, ectopia lentis, and anterior synechiae between the iris and posterior corneal surface. Clinical conditions falling within the phenotypic spectrum of anterior segment dysgeneses include aniridia, Axenfeld anomaly, Reiger anomaly/syndrome, Peters anomaly, and iridogoniodysgenesis.

Disease Ontology Description A corneal disease characterized by a central corneal leukoma and absence of the posterior corneal stroma and Descemet membrane that has_material_basis_in mutation in the PAX6 gene on chromosome 11p13, the PITX2 gene on chromosome 4q25, the CYP1B1 gene on chromosome 2p22.2, or the FOXC1 gene on chromosome 6p25.3.