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Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Primary congenital and developmental glaucomas.

Carly J Lewis1,2,3, Adam Hedberg-Buenz1,2,3, Adam P DeLuca2,3

  • 1Department of Molecular Physiology and Biophysics, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA.

Human Molecular Genetics
|May 27, 2017
PubMed
Summary
This summary is machine-generated.

Primary congenital glaucoma (PCG) and other childhood glaucomas are significant causes of blindness. Genetic mutations in genes like CYP1B1, LTBP2, TEK, PITX2, FOXC1, and PAX6 are key factors in these conditions.

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Area of Science:

  • Ophthalmology
  • Genetics

Background:

  • Glaucoma is a leading cause of irreversible blindness globally.
  • While common in the elderly, congenital and childhood glaucomas significantly impact young individuals.
  • Primary congenital glaucoma (PCG) is a major cause of blindness in children under three years old.

Purpose of the Study:

  • To review the genetic basis of primary congenital glaucoma (PCG).
  • To discuss the genetic factors contributing to other early-onset glaucomas, including those associated with aniridia and Axenfeld-Rieger syndrome.
  • To highlight the roles of specific genes in congenital and childhood glaucomas.

Main Methods:

  • Literature review of studies on congenital and childhood glaucoma genetics.
  • Analysis of reported gene mutations in PCG, aniridia, and Axenfeld-Rieger syndrome.
  • Discussion of the functions of identified genes in ocular development and disease pathogenesis.

Main Results:

  • Mutations in CYP1B1, LTBP2, and TEK genes are associated with PCG.
  • Mutations in PITX2 or FOXC1 cause Axenfeld-Rieger syndrome.
  • PAX6 mutations are linked to aniridia, another cause of childhood glaucoma.

Conclusions:

  • Congenital and childhood glaucomas have a strong genetic etiology.
  • Identifying causative genes is crucial for understanding disease mechanisms and developing targeted therapies.
  • Further research into these genes will advance the diagnosis and treatment of early-onset glaucoma.