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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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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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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.
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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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Related Experiment Video

Updated: Jun 15, 2025

Glaucoma-inducing Procedure in an In Vivo Rat Model and Whole-mount Retina Preparation
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Glaucoma and refractive surgery: A comprehensive review.

Sivani Kodali1, Somasheila Murthy2, Nandini Banad2

  • 1Glaucoma Services, GMRV Campus, LV Prasad Eye Institute, Visakhapatnam, India.

Indian Journal of Ophthalmology
|August 26, 2024
PubMed
Summary
This summary is machine-generated.

Refractive surgery can affect intraocular pressure (IOP) measurements due to corneal changes. This review details managing elevated IOP after surgery, especially in myopic patients, and proposes an intervention algorithm.

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Area of Science:

  • Ophthalmology
  • Corneal Surgery
  • Glaucoma Management

Background:

  • Increasing rates of refractive surgery, especially in myopic patients.
  • Concerns regarding accurate intraocular pressure (IOP) measurement post-surgery due to central corneal thinning.
  • Myopic eyes exhibit increased susceptibility to glaucoma.

Purpose of the Study:

  • To review the causes and mechanisms of elevated IOP after refractive surgery.
  • To discuss therapeutic strategies for managing post-refractive surgery elevated IOP.
  • To propose an algorithm for diagnosing and managing elevated IOP.

Main Methods:

  • Comprehensive literature review on refractive surgery outcomes and IOP.
  • Analysis of etiological factors contributing to elevated IOP.
  • Development of a clinical management algorithm.

Main Results:

  • Elevated IOP post-refractive surgery is a multifactorial issue.
  • Central corneal thinning is a primary concern affecting IOP readings.
  • Myopia is a risk factor for glaucoma development and progression.

Conclusions:

  • Preoperative glaucoma screening and diligent postoperative monitoring are crucial.
  • Effective management requires understanding the underlying mechanisms of IOP elevation.
  • The proposed algorithm aids in systematic intervention for elevated IOP.