Knobloch syndrome 1

A developmental disorder primarily characterized by typical eye abnormalities, including high myopia, cataracts, dislocated lens, vitreoretinal degeneration, and retinal detachment, with occipital skull defects, which can range from occipital encephalocele to occult cutis aplasia.

Doyne honeycomb retinal dystrophy

An autosomal dominant, progressive, ocular disorder characterized by yellow-white deposits known as drusen that accumulate beneath the retinal pigment epithelium. With age, drusen increase in size and number, and eventually cause visual symptoms, including decreased visual acuity, metamorphopsia, photophobia, and paracentral scotoma.

Glaucoma 3, primary congenital, D

An autosomal recessive form of primary congenital glaucoma (PCG). PCG is characterized by marked increase of intraocular pressure at birth or early childhood, large ocular globes (buphthalmos) and corneal edema. It results from developmental defects of the trabecular meshwork and anterior chamber angle of the eye that prevent adequate drainage of aqueous humor.

Axenfeld-Rieger syndrome 3

An autosomal dominant disorder of morphogenesis that results in abnormal development of the anterior segment of the eye, and results in blindness from glaucoma in approximately 50% of affected individuals. Features include posterior corneal embryotoxon, prominent Schwalbe line and iris adhesion to the Schwalbe line, hypertelorism, hypodontia, sensorineural deafness, redundant periumbilical skin, and cardiovascular defects such as patent ductus arteriosus and atrial septal defect. When associated with tooth anomalies, the disorder is known as Rieger syndrome.

Glaucoma 1, open angle, A

A form of primary open angle glaucoma (POAG). POAG is characterized by a specific pattern of optic nerve and visual field defects. The angle of the anterior chamber of the eye is open, and usually the intraocular pressure is increased. However, glaucoma can occur at any intraocular pressure. The disease is generally asymptomatic until the late stages, by which time significant and irreversible optic nerve damage has already taken place.

Glaucoma 1, open angle, E

A form of primary open angle glaucoma (POAG). POAG is characterized by a specific pattern of optic nerve and visual field defects. The angle of the anterior chamber of the eye is open, and usually the intraocular pressure is increased. However, glaucoma can occur at any intraocular pressure. The disease is generally asymptomatic until the late stages, by which time significant and irreversible optic nerve damage has already taken place.

Dominantly inherited venous malformations

An error of vascular morphogenesis characterized by dilated, serpiginous channels.

Anterior segment dysgenesis 6

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. ASGD6 patients predominantly manifest Peters anomaly. Peters anomaly consists of corneal leukoma, defects in the posterior structures of the cornea such as absence of the posterior corneal stroma and Descemet membrane, and a variable degree of iridocorneal and/or keratolenticular adhesions. Over 50% of patients develop glaucoma in childhood.

Glaucoma 1, open angle, O

A form of primary open angle glaucoma (POAG). POAG is characterized by a specific pattern of optic nerve and visual field defects. The angle of the anterior chamber of the eye is open, and usually the intraocular pressure is increased. However, glaucoma can occur at any intraocular pressure. The disease is generally asymptomatic until the late stages, by which time significant and irreversible optic nerve damage has already taken place.