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 Experiment Videos

Minimal astigmatism after sutureless planned extracapsular cataract extraction.

Zvia Burgansky1, Itzhak Isakov, Haggay Avizemer

  • 1Department of Ophthalmology, The Edith Wolfson Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Holon, Israel.

Journal of Cataract and Refractive Surgery
|April 26, 2002
PubMed
Summary

Enlarging chevron incisions for cataract surgery to 7.0 mm slightly increased induced astigmatism. However, this larger incision simplifies the extracapsular cataract extraction (ECCE) technique for surgeons.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Diamond Burr Keratectomy for Bilateral Recurrent Corneal Erosion Syndrome in Epidermolysis Bullosa: A Case Report.

Ocular immunology and inflammation·2026
Same author

Chat GPT vs an experienced ophthalmologist: evaluating chatbot writing performance in ophthalmology.

Eye (London, England)·2025
Same author

Comparison of flanged polypropylene scleral intraocular lens fixation with scleral sutured fixation.

Canadian journal of ophthalmology. Journal canadien d'ophtalmologie·2024
Same author

Risk factors for a phacodonesis surprise during cataract surgery in patients with pseudoexfoliation.

International ophthalmology·2023
Same author

Wound-assisted air injection in Descemet Stripping Automated Endothelial Keratoplasty.

American journal of ophthalmology case reports·2022
Same author

Safety of 3 Tesla Magnetic Resonance Imaging on iStent Implants: An Ex-Vivo Study.

Journal of glaucoma·2021

Area of Science:

  • Ophthalmology
  • Surgical Techniques
  • Corneal Astigmatism

Background:

  • Cataract surgery, specifically extracapsular cataract extraction (ECCE), often involves incisions for nucleus removal.
  • Optimizing incision size is crucial for balancing surgical ease and postoperative visual outcomes.
  • Chevron incisions are a common technique, but their optimal size for different cataract densities is debated.

Purpose of the Study:

  • To evaluate the impact of enlarged chevron incisions (6.0-7.0 mm) on induced astigmatism after mini-nucleary extracapsular cataract extraction (ECCE).
  • To compare the astigmatic outcomes of these larger incisions with a previously established 5.0 mm incision.
  • To assess the effect of incision size on the ease of nucleus removal during cataract surgery.

Main Methods:

Related Experiment Videos

  • A prospective study involving 30 eyes of 29 patients undergoing mini-nucleary ECCE.
  • Keratometry measurements were taken preoperatively and 3-9 months postoperatively.
  • Chevron incisions were enlarged to 6.0 mm, 6.5 mm, or 7.0 mm based on cataract maturity.

Main Results:

  • Mean induced astigmatism varied by incision size: 0.12 D (6.0 mm), 0.16 D (6.5 mm), and 0.67 D (7.0 mm) by simple subtraction.
  • Vector analysis showed mean induced astigmatism of 0.60 D (6.0 mm), 0.75 D (6.5 mm), and 1.36 D (7.0 mm).
  • The 7.0 mm incision group demonstrated a statistically significant increase in induced astigmatism compared to the 5.0 mm group (P=.01-.002).

Conclusions:

  • Enlarging chevron incisions up to 7.0 mm for mini-nucleary ECCE leads to a modest increase in induced astigmatism.
  • The larger incision size simplifies the surgical technique, potentially aiding nucleus removal.
  • The benefits of simplified surgery must be weighed against the slight increase in postoperative astigmatism.