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Related Concept Videos

Glaucoma: Overview01:25

Glaucoma: Overview

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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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Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
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Related Experiment Video

Updated: Jul 2, 2025

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Characteristic Differences between Normotensive and Hypertensive Pseudoexfoliative Glaucoma.

Da Young Shin1, Chan Kee Park2, Na Young Lee1

  • 1Department of Ophthalmology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 03312, Republic of Korea.

Journal of Clinical Medicine
|February 24, 2024
PubMed
Summary

Normotensive pseudoexfoliative glaucoma (PXG) eyes show thinner central corneal thickness and lamina cribrosa thickness compared to hypertensive PXG eyes, indicating potential structural vulnerability in glaucoma.

Keywords:
central corneal thicknesshypertensive pseudoexfoliative glaucomalamina cribrosanormotensive pseudoexfoliative glaucoma

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Area of Science:

  • Ophthalmology
  • Glaucoma Research
  • Ocular Biomechanics

Background:

  • Pseudoexfoliative glaucoma (PXG) is a common form of secondary glaucoma.
  • Intraocular pressure (IOP) is a key factor in glaucoma progression.
  • Understanding structural differences in PXG based on IOP is crucial for risk stratification.

Purpose of the Study:

  • To compare ocular structural differences between hypertensive and normotensive pseudoexfoliative glaucoma (PXG) eyes.
  • To investigate the relationship between intraocular pressure (IOP) and ocular parameters in PXG.

Main Methods:

  • Retrospective study of 166 PXG eyes (86 hypertensive, 80 normotensive).
  • Central corneal thickness (CCT) measured by ultrasound pachymetry.
  • Lamina cribrosa thickness (LT) evaluated using swept-source optical coherence tomography.

Main Results:

  • Normotensive PXG eyes had significantly thinner CCT than hypertensive PXG eyes (p=0.02).
  • After matching for age and glaucoma severity, normotensive PXG eyes showed significantly thinner LT compared to hypertensive PXG eyes (p<0.001).
  • No significant differences in age, gender, axial length, hypertension, or diabetes were found between groups.

Conclusions:

  • Eyes with normotensive PXG exhibit thinner CCT and LT compared to hypertensive PXG eyes.
  • These findings suggest a potential structural vulnerability in normotensive PXG.
  • Structural differences may influence glaucoma progression and management strategies.