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Related Concept Videos

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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Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
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Open Angle Glaucoma: Treatment01:27

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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.
Drugs such as carbonic anhydrase inhibitors, α2- and...
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Angle Closure Glaucoma: Treatment01:28

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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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Photoreceptors and Visual Pathways01:22

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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
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Updated: Apr 18, 2026

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
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Myopia and glaucoma: sorting out the difference.

Chi-Hsin Hsu1, Rebecca I Chen, Shan C Lin

  • 1aDepartment of Ophthalmology, University of California, San Francisco, California, USA bDepartment of Ophthalmology, Taipei Medical University Shuang Ho Hospital, New Taipei City, Taiwan cCase Western Reserve University School of Medicine, Cleveland, Ohio, USA.

Current Opinion in Ophthalmology
|January 8, 2015
PubMed
Summary
This summary is machine-generated.

High myopia increases glaucoma risk, but distinguishing between myopia-related and glaucoma-related optic nerve damage is challenging. New imaging techniques aid detection, but clinical suspicion and monitoring progression are key for diagnosis.

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Area of Science:

  • Ophthalmology
  • Optometry
  • Medical Research

Background:

  • Myopia is increasingly prevalent globally.
  • Glaucoma is a leading cause of irreversible blindness.
  • The relationship between myopia and glaucoma is complex and warrants further investigation.

Purpose of the Study:

  • To review the association between myopia and glaucoma.
  • To explore potential mechanisms underlying this relationship.
  • To discuss challenges in diagnosing glaucoma in myopic eyes.

Main Methods:

  • Literature review of existing studies.
  • Analysis of evidence implicating myopia in glaucoma risk.
  • Evaluation of diagnostic controversies and emerging imaging technologies.

Main Results:

  • Higher myopia categories correlate with increased risk of optic neuropathy and glaucoma-like visual field defects.
  • Advanced imaging modalities offer improved detection of optic nerve head microanatomical changes.
  • Myopic eyes exhibit structural and functional defects that can mimic glaucomatous changes, complicating diagnosis.

Conclusions:

  • The interplay between myopia and glaucoma risk is intricate, partly due to myopia-induced retinal and nerve fiber layer damage.
  • Clinical suspicion, assessment of other risk factors, and monitoring for progression are crucial for diagnosing glaucoma in myopic patients.
  • Progression of glaucoma-like findings is the definitive factor in diagnosing glaucoma in individuals with myopia.