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Related Concept Videos

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Angle Closure Glaucoma: Treatment

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: May 18, 2026

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
07:11

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential

Published on: May 25, 2020

Hong's grading for evaluating anterior chamber angle width.

Seok Hwan Kim1, Ja Heon Kang, Ki Ho Park

  • 1Department of Ophthalmology, Seoul National University College of Medicine, #28 Yongon-dong, Chongno-gu, Seoul 110-744, Korea.

Japanese Journal of Ophthalmology
|September 14, 2012
PubMed
Summary

Hong's grading method effectively identifies narrow anterior chamber angles. This method shows good correlation with anterior segment optical coherence tomography (AS-OCT) and the dark-room prone-position test (DRPT).

Related Experiment Videos

Last Updated: May 18, 2026

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
07:11

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential

Published on: May 25, 2020

Area of Science:

  • Ophthalmology
  • Anatomical measurements
  • Diagnostic techniques

Background:

  • Accurate assessment of anterior chamber width is crucial for diagnosing glaucoma.
  • Traditional methods like gonioscopy can be subjective.
  • Novel imaging and grading techniques are needed for improved accuracy.

Purpose of the Study:

  • To evaluate Hong's grading method for anterior chamber width assessment.
  • To compare Hong's method with anterior segment optical coherence tomography (AS-OCT), gonioscopy, and the dark-room prone-position test (DRPT).

Main Methods:

  • Hong's grading method was applied to assess anterior chamber angles.
  • Correlation analysis was performed between Hong's angle width and AS-OCT parameters.
  • The diagnostic performance of Hong's method for narrow angles was assessed using gonioscopy.
  • Correlation between Hong's angle width and intraocular pressure (IOP) changes from DRPT was analyzed.

Main Results:

  • Hong's angle width demonstrated significant correlation with AS-OCT parameters (r = 0.562-0.719, P < 0.01).
  • Hong's grading method showed good discriminatory ability for narrow angles (AUC = 0.868).
  • A strong negative correlation was observed between Hong's angle width and IOP changes determined by DRPT (r = -0.761, P < 0.01).

Conclusions:

  • Hong's grading method is a valuable tool for detecting narrow anterior chamber angles.
  • The method exhibits good agreement with AS-OCT and correlates well with DRPT findings.