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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 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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Related Experiment Video

Updated: Mar 20, 2026

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Sarcoid Uveitis with Choroidal Involvement.

Elli Joukainen1,2, Jaakko A Antonen1, Sanna Leinonen1,3

  • 1Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.

Clinical Ophthalmology (Auckland, N.Z.)
|March 19, 2026
PubMed
Summary

Choroidal involvement is common in sarcoid uveitis, affecting 32% of patients. Early detection through ocular imaging is crucial, as it may be missed with standard examination alone.

Keywords:
choroidal involvementsarcoid uveitissarcoidosisuveitis

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Area of Science:

  • Ophthalmology
  • Immunology
  • Systemic Diseases

Background:

  • Sarcoid uveitis is an inflammatory condition affecting the eye.
  • Choroidal involvement can occur but its prevalence and characteristics are not fully understood.

Purpose of the Study:

  • To investigate the characteristics of choroidal involvement in patients with sarcoid uveitis.
  • To determine the prevalence and diagnostic challenges of choroidal involvement in sarcoid uveitis.

Main Methods:

  • Retrospective analysis of 97 patients with confirmed sarcoidosis and uveitis.
  • Ocular examinations including slit-lamp and ocular imaging were performed between January 2014 and January 2021.
  • Analysis of choroidal involvement patterns, including nodules and types of choroiditis.

Main Results:

  • Choroidal involvement was detected in 32% (31/97) of patients, with 5 cases identified only through ocular imaging.
  • Common findings included multifocal choroiditis (90%) and choroidal nodules (10%).
  • Patients with choroidal involvement showed higher rates of chronic uveitis, bilateral disease, vitreal snowballs, and macular edema.

Conclusions:

  • Choroidal involvement is a frequent manifestation of sarcoid uveitis and is often underdiagnosed.
  • Ocular imaging is recommended in addition to slit-lamp examination for comprehensive assessment of choroidal involvement in sarcoid uveitis.