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Related Concept Videos

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...
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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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Related Experiment Video

Updated: Jul 4, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile
05:46

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

Postrefractive surgery dry eye.

Guilherme G Quinto1, Walter Camacho, Ashley Behrens

  • 1The Wilmer Ophthalmological Institute, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21287-0005, USA.

Current Opinion in Ophthalmology
|June 12, 2008
PubMed
Summary

Dry eye is a common complication following refractive surgery due to corneal nerve damage. Treatments like cyclosporine and punctal occlusion show promise, with femtosecond lasers potentially reducing dry eye symptoms.

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Area of Science:

  • Ophthalmology
  • Ocular Surface Disease
  • Refractive Surgery

Background:

  • Refractive surgery, including photorefractive keratectomy and laser in-situ keratomileusis, can lead to ocular surface changes.
  • Damage to corneal sensory nerves is a known consequence, affecting tear secretion and tear film stability.

Purpose of the Study:

  • To review recent literature on ocular surface alterations post-refractive surgery.
  • To evaluate treatment outcomes for dry eye disease occurring after refractive surgery.

Main Methods:

  • Literature review of published studies.
  • Analysis of treatment modalities for post-refractive surgery dry eye.

Main Results:

  • Cyclosporine, an FDA-approved agent, shows positive results for chronic dry eye.
  • Combined cyclosporine and punctal occlusion may offer additive benefits.
  • Femtosecond laser-assisted in-situ keratomileusis (LASIK) may result in fewer dry eye symptoms, possibly due to thinner flap creation.

Conclusions:

  • Dry eye is a frequent complication after photorefractive keratectomy and LASIK.
  • Pre-existing dry eye requires ocular surface management before refractive surgery.
  • Addressing corneal nerve damage and tear film instability is crucial for managing post-refractive surgery dry eye.