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Related Concept Videos

Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

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...
Angle Closure Glaucoma: Treatment01:28

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...
Glaucoma: Overview01:25

Glaucoma: Overview

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...
Ophthalmic Drug Delivery Systems01:23

Ophthalmic Drug Delivery Systems

Ophthalmic drug delivery faces major limitations due to poor absorption across the corneal membrane. This process is primarily driven by diffusion and is influenced by two main factors: the physicochemical properties of the drug and tear drainage. Most ophthalmic drugs, such as pilocarpine, epinephrine, atropine, and local anesthetics, are weak bases. They are typically formulated at an acidic pH to enhance chemical stability. However, this leads to high ionization, reducing their ability to...

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Related Experiment Video

Updated: Jun 16, 2026

Modeling Cataract Surgery in Mice
05:19

Modeling Cataract Surgery in Mice

Published on: December 1, 2023

Cataract surgery to lower intraocular pressure.

John P Berdahl1

  • 1Minnesota Eye Consultants, 710 East 24 St, Suite 100, Minneapolis MN 55404-3810.

Middle East African Journal of Ophthalmology
|February 10, 2010
PubMed
Summary

Cataract surgery appears to reduce intraocular pressure (IOP) long-term, particularly in glaucoma patients with high initial IOP. Further research is needed to understand the underlying mechanisms of this effect.

Keywords:
CataractGlaucomaIntraocular PressurePhacoemulsificationSurgery

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Area of Science:

  • Ophthalmology
  • Clinical Science

Background:

  • Cataract and glaucoma are prevalent comorbidities.
  • Cataract surgery is a common procedure for patients with glaucoma.

Purpose of the Study:

  • To evaluate the effect of cataract surgery on intraocular pressure (IOP).
  • To synthesize existing literature on cataract surgery and IOP in glaucoma patients.

Main Methods:

  • Literature review using search terms: cataract, glaucoma, intraocular pressure.
  • Data evaluation and synthesis.

Main Results:

  • Cataract surgery demonstrated a sustained reduction in intraocular pressure.
  • The IOP-lowering effect was more pronounced in patients with higher preoperative IOP.

Conclusions:

  • Cataract surgery may offer a beneficial effect on lowering intraocular pressure.
  • The precise mechanisms driving this IOP reduction require further investigation.