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

Instrument-induced measurement errors during strabismus surgery.

R A Clark1, A L Rosenbaum

  • 1Department of Ophthalmology, University of California, Los Angeles, USA.

Journal of AAPOS : the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
|March 11, 1999
PubMed
Summary
This summary is machine-generated.

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

Importance of sagittal orbital imaging in evaluating extraocular muscle trauma following endoscopic sinus surgery.

The British journal of ophthalmology·2006
Same author

Ethmoidal sinus mucocele: an unusual cause of acquired Brown syndrome.

The British journal of ophthalmology·2005
Same author

Cause of V pattern strabismus in craniosynostosis: a case report.

The British journal of ophthalmology·2004
Same author

Orbital wall approach with preoperative orbital imaging for identification and retrieval of lost or transected extraocular muscles.

Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus·2001
Same author

Timing of postoperative adjustment in adjustable suture strabismus surgery.

Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus·2001
Same author

Vertical rectus muscle augmented transposition in Duane syndrome.

Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus·2001
Same journal

Lipemia retinalis in a neonate with Kaufman oculocerebrofacial syndrome: a case of co-occurrence.

Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus·2026
Same journal

Extensive conjunctival papillomatosis in focal dermal hypoplasia.

Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus·2026
Same journal

Dacryoendoscopic findings and treatment of congenital lacrimal duct obstruction in Wolf-Hirschhorn syndrome: a case series.

Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus·2026
Same journal

A presumed case of tinea blepharociliaris in a 10-year-old boy.

Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus·2026
Same journal

Ferret attack requiring eyelid, lacrimal system, and facial reconstruction to restore anatomy and function.

Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus·2026
Same journal

Postoperative syphilitic scleritis following strabismus surgery.

Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus·2026
See all related articles

Accurate strabismus surgery measurements under 9mm are achievable with Scott curved rulers or calipers. However, longer measurements require careful consideration of eye axial length to avoid errors.

Area of Science:

  • Ophthalmology
  • Surgical Instrumentation
  • Biomedical Engineering

Background:

  • Accurate measurement of muscle position is critical in strabismus surgery.
  • Existing tools like the Scott curved ruler and calipers have known limitations.

Purpose of the Study:

  • To identify clinical scenarios where measurement errors occur during strabismus surgery.
  • To quantify the magnitude of errors using the Scott curved ruler and calipers.

Main Methods:

  • Geometric analysis was employed to compare true arc lengths with measurements from the Scott curved ruler and calipers.
  • Measurements were analyzed across a range of arc lengths (3.0-20.0 mm) and axial lengths (18-30 mm).

Main Results:

  • Neither instrument showed clinically significant errors for measurements below 9.0 mm.

Related Experiment Videos

  • The Scott curved ruler, while generally more accurate, introduced errors for arc lengths of 12 mm (small eyes) and 14 mm (large eyes) in specific axial lengths.
  • Accuracy for both tools became comparable for long arc lengths in eyes with axial lengths of 30 mm or more.

    • Conclusions:

    • Both Scott curved ruler and calipers are reliable for arc length measurements up to 9.0 mm.
    • Measurement accuracy for longer arcs is influenced by axial length.
    • Clinically significant errors can arise with the Scott curved ruler for arc lengths as small as 12 mm, necessitating consideration of axial length in strabismus surgery.