Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

An Autosomal Dominant <i>TUBB3</i> Mutation Associated With Congenital Fibrosis of the Extraocular Muscles Type 3 in an Iranian Family.

Basic and clinical neuroscience·2026
Same author

Fibrous ingrowth: an overlooked cause of Ahmed Glaucoma Valve failure.

Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie·2026
Same author

Development and evaluation of analytical strategies for the monitoring of per- and polyfluoroalkyl substances from lithium-ion battery recycling materials.

Analytical and bioanalytical chemistry·2025
Same author

Deep Anterior Lamellar Keratoplasty Versus Penetrating Keratoplasty in Keratoconus: A Retrospective Study Using Coarsened Exact Matching.

Journal of ophthalmic & vision research·2025
Same author

Changes in Major Retinal Blood Vessel Position Outside the Optic Nerve Head in Glaucomatous Eyes.

Journal of ophthalmic & vision research·2025
Same author

Bulbar Conjunctival Thickness in Eyes with Pseudoexfoliation Measured by Anterior Segment OCT.

Journal of ophthalmic & vision research·2025

Related Experiment Video

Updated: Jun 22, 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

Effect of chalazion excision on refractive error and corneal topography.

Abbas Bagheri1, Hamid R Hasani, Farid Karimian

  • 1Department of Ophthalmology, Labbafinejad Hospital, Shaheed Beheshti Medical University, Ophthalmic Research Center, Tehran - Iran. abbasbaheri@yahoo.com

European Journal of Ophthalmology
|June 25, 2009
PubMed
Summary

Chalazion excision can reduce corneal astigmatism and irregularity, particularly with single, firm, central upper lid lesions. This finding is significant for pediatric patients susceptible to amblyopia.

More Related Videos

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
05:14

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

Related Experiment Videos

Last Updated: Jun 22, 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

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
05:14

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

Area of Science:

  • Ophthalmology
  • Corneal Surgery
  • Refractive Error

Background:

  • Chalazia are common eyelid tumors that can cause visual disturbances.
  • Previous studies have not fully elucidated the impact of chalazion excision on corneal topography and refractive error.

Purpose of the Study:

  • To assess refractive and corneal topographic changes after chalazion excision.
  • To identify factors influencing these changes.

Main Methods:

  • Prospective, noncomparative clinical trial involving 195 patients (228 eyes) aged 7 years and older.
  • Chalazion excision performed via internal or external approach.
  • Pre- and post-operative measurements of visual acuity, refractive error, and corneal topography.

Main Results:

  • Chalazion excision led to a significant decrease in corneal astigmatism (p<0.0001) and improvements in corneal surface regularity and asymmetry.
  • Changes in keratometry (corneal astigmatism) were more pronounced in single, central, and firm chalazia compared to multiple, peripheral, and soft lesions.
  • No significant changes were observed in best-corrected visual acuity or spherical equivalent refractive error.

Conclusions:

  • Chalazion excision can effectively reduce corneal astigmatism and irregularity.
  • Single, firm, and central upper lid chalazia are associated with more significant induced astigmatism reduction.
  • Findings may be relevant for managing pediatric patients at risk of amblyopia due to refractive errors.