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Related Concept Videos

Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

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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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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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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: Oct 15, 2025

Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation
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Optimizing the ocular surface prior to cataract surgery.

Xu He1, Andy S Huang2, Bennie H Jeng1

  • 1Department of Ophthalmology and Visual Sciences, University of Maryland School of Medicine, Baltimore, Maryland.

Current Opinion in Ophthalmology
|October 26, 2021
PubMed
Summary
This summary is machine-generated.

Optimizing ocular surface conditions like dry eye disease is crucial for successful cataract surgery. Addressing these issues before surgery improves refractive predictability and visual outcomes.

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Area of Science:

  • Ophthalmology
  • Ocular Surface Disease
  • Cataract Surgery Outcomes

Background:

  • Ocular surface diseases significantly impact cataract surgery results.
  • Conditions like dry eye disease (DED), epithelial basement membrane dystrophy (EBMD), Salzmann nodular degeneration (SND), and pterygium can induce irregular astigmatism and higher-order aberrations.

Purpose of the Study:

  • To review and update the understanding of managing ocular surface conditions before cataract surgery.
  • To emphasize the importance of optimizing the ocular surface for predictable surgical outcomes.

Main Methods:

  • Review of recent studies on DED therapies.
  • Analysis of the impact of epithelial debridement on keratometry in EBMD and SND.
  • Evaluation of refractive error predictability in combined pterygium and cataract surgery.

Main Results:

  • Ocular surface conditions can alter biometry measurements, affecting final visual outcomes.
  • Newer DED therapies (e.g., lifitegrast, thermal pulsation) can aid in ocular surface optimization.
  • Adequate healing time post-keratectomy or lesion excision is necessary for stable biometry.

Conclusions:

  • Pre-operative ocular surface optimization is essential for successful cataract surgery planning.
  • Addressing ocular surface disease leads to improved refractive predictability and patient satisfaction.