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

Enhanced accuracy is necessary for refractive surgery instrumentation.

A C Neumann1, G R McCarty, B Copello

  • 1Neumann Eye Institute, DeLand, Florida.

Journal of Cataract and Refractive Surgery
|March 1, 1989
PubMed
Summary

Flaws in refractive surgery instruments, including optical zone markers and diamond knives, were found. These defects pose risks such as corneal perforations, necessitating rigorous inspection of surgical tools.

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

Prior Incarceration and Dental Insurance Trajectories throughout Older Adulthood.

JDR clinical and translational research·2025
Same author

Cephalometric measurements and determination of general skull type of Cavalier King Charles Spaniels.

Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·2011
Same author

Reduced plasma cortisol binding to albumin in ocular hypertension and primary open-angle glaucoma.

Current eye research·1999
Same author

Anterior chamber metal fragments after phacoemulsification surgery.

Journal of cataract and refractive surgery·1998
Same author

Efficacy of diclofenac sodium ophthalmic solution versus placebo in reducing inflammation following cataract extraction and posterior chamber lens implantation.

Journal of cataract and refractive surgery·1994
Same author

Prophylactic use of apraclonidine for intraocular pressure increase after Nd:YAG capsulotomies.

American journal of ophthalmology·1992

Area of Science:

  • Ophthalmology
  • Materials Science
  • Surgical Instrumentation

Background:

  • Refractive surgery relies on precise instrumentation for accurate corneal incisions.
  • The quality and accuracy of surgical tools directly impact patient outcomes and safety.

Purpose of the Study:

  • To evaluate the quality and accuracy of newly acquired optical zone markers, diamond knives, and gauge blocks.
  • To identify potential defects that could compromise refractive surgery procedures.

Main Methods:

  • A random selection of optical zone markers, diamond knives, and gauge blocks were procured from various manufacturers.
  • An independent metallurgical engineer conducted detailed inspections, including dimensional accuracy and workmanship assessment.

Main Results:

Related Experiment Videos

  • Significant workmanship flaws and accuracy errors were identified in all tested instrument categories.
  • Optical zone markers lacked clear instructions, and some had centering errors exceeding 100 microns.
  • Diamond knives exhibited issues like broken tips, uneven footplates, and micrometer inaccuracies.
  • Blade gauges showed errors that could lead to incorrect incision depths, risking corneal perforations.

Conclusions:

  • The study highlights critical quality control issues in refractive surgery instruments.
  • Routine, high-power microscopic inspection of instruments at procurement and regularly thereafter is strongly recommended.
  • Ensuring instrument accuracy is paramount to prevent surgical complications and improve patient safety.