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Related Concept Videos

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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

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Retinal and Choroidal Thickness Changes in Populations with Helicobacter pylori Infection by Swept-Source Optical Coherence Tomography
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Is increased choroidal thickness association with primary angle closure?

Minwen Zhou1, Wei Wang, Wenbin Huang

  • 1Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-sen University, Guangzhou, China.

Acta Ophthalmologica
|April 5, 2014
PubMed
Summary
This summary is machine-generated.

Increased choroidal thickness may be a risk factor for primary angle closure. This study found thicker choroids in eyes with primary angle closure compared to healthy controls, suggesting a potential link.

Keywords:
associationchoroidal thicknessprimary angle closurerisk factor

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Area of Science:

  • Ophthalmology
  • Anatomy
  • Glaucoma Research

Background:

  • Primary angle closure is a leading cause of irreversible blindness worldwide.
  • Choroidal thickness is a key ocular parameter that may influence intraocular pressure and optic nerve health.
  • Understanding anatomical risk factors for primary angle closure is crucial for early detection and intervention.

Purpose of the Study:

  • To investigate the association between increased choroidal thickness and primary angle closure.
  • To determine if choroidal thickness is a significant risk factor for primary angle closure.
  • To evaluate the diagnostic potential of choroidal thickness in identifying primary angle closure.

Main Methods:

  • A comparative study involving 162 patients with primary angle closure (suspect, PAC, PACG) and 87 healthy controls.
  • Enhanced depth imaging optical coherence tomography (EDI-OCT) was used to measure macular choroidal thickness.
  • Logistic regression models and receiver operating characteristic (ROC) analysis were employed to assess the association and diagnostic value.

Main Results:

  • Primary angle closure eyes exhibited significantly thicker choroids across all macular locations compared to controls.
  • Subfoveal choroidal thickness (SFCT) remained significantly associated with primary angle closure even after adjusting for ocular parameters (OR=1.008, 95% CI: 1.003-1.014).
  • The area under the curve (AUC) for SFCT in detecting primary angle closure was 0.619, indicating a statistically significant but low specificity.

Conclusions:

  • Eyes with primary angle closure demonstrate increased macular choroidal thickness compared to normal eyes.
  • Elevated choroidal thickness is potentially associated with the pathogenesis of primary angle closure.
  • Subfoveal choroidal thickness has limited specificity for screening primary angle closure.