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Glaucoma: Overview01:25

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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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In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
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Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
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[Glaucoma and nanophthalmos].

A Lappas1, A Rosentreter2, A Hedergott3

  • 1Zentrum für Augenheilkunde, Uniklinik Köln, Joseph-Stelzmann Str. 9, 50931, Köln, Deutschland. Alexandra.Lappa@uk-koeln.de.

Der Ophthalmologe : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|December 16, 2018
PubMed
Summary
This summary is machine-generated.

Nanophthalmos, a small but morphologically normal eye, often causes hyperopia and glaucoma. Understanding its unique anatomy is crucial for managing surgical risks and treating associated angle-closure glaucoma.

Keywords:
Angle-closure glaucomaHyperopiaMicrophthalmosRetinal pigment epitheliumVitrectomy

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Area of Science:

  • Ophthalmology
  • Medical Genetics

Background:

  • Nanophthalmos is a rare condition characterized by a clinically small eye that appears morphologically normal.
  • It is frequently associated with hyperopia and can lead to secondary pathologies like angle-closure glaucoma.

Purpose of the Study:

  • To define nanophthalmos, discuss its genetics, and clinical findings.
  • To focus on the complication of glaucoma in nanophthalmic eyes and its treatment.

Main Methods:

  • Review of clinical findings and anatomical characteristics of nanophthalmic eyes.
  • Discussion of genetic factors and predisposing anatomical anomalies.
  • Analysis of therapeutic interventions for glaucoma in nanophthalmos.

Main Results:

  • Nanophthalmic eyes exhibit a small anterior chamber depth, scleral thickening, and vein plexus anomalies.
  • These anatomical features predispose individuals to angle-closure glaucoma.
  • Surgical risks in nanophthalmic eyes necessitate careful perioperative examination.

Conclusions:

  • Nanophthalmos presents unique challenges due to anatomical variations, increasing glaucoma risk.
  • Effective management involves understanding these anatomical risks and employing specific surgical interventions.
  • Treatments like iridectomy, lensectomy, vitrectomy, and cyclophotocoagulation can counter therapeutic challenges.