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

A new video pachometer.

J W McLaren1, W M Bourne

  • 1Department of Ophthalmology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA.

Investigative Ophthalmology & Visual Science
|June 8, 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

Radiographic studies of duodenum and jejunum in man.

The Journal of the Faculty of Radiologists. Faculty of Radiologists (Great Britain)·2014
Same author

Further radiological studies of the movements of the jejunum in man, with special reference to steatorrhoea.

The Journal of the Faculty of Radiologists. Faculty of Radiologists (Great Britain)·2014
Same author

Books and Software: Getting serious about ICPMS.

Analytical chemistry·2011
Same author

Calcium gluconate injection into muscle.

The British journal of radiology·2010
Same author

Light sources for fluorescein fluorophotometry: erratum.

Applied optics·2010
Same author

Automated assessment of keratocyte density in clinical confocal microscopy of the corneal stroma.

Journal of microscopy·2008

A new video pachometer offers a simple, objective method for measuring corneal thickness. This innovative optical device provides precision comparable to traditional methods, enhancing ophthalmic research.

Area of Science:

  • Ophthalmology
  • Biomedical Engineering
  • Optometry

Background:

  • Accurate corneal thickness measurement is crucial for various ophthalmic studies.
  • Existing methods may lack simplicity or objectivity.
  • A need exists for an improved, user-friendly corneal thickness measurement tool.

Purpose of the Study:

  • To design and evaluate a novel optical pachometer utilizing video and computer technology.
  • To establish a simple and objective method for measuring corneal thickness.

Main Methods:

  • A video camera captured slit lamp images of the cornea.
  • Custom software identified epithelial and endothelial edges.
  • Corneal thickness was calculated using image analysis and calibration with known contact lens thicknesses.

Related Experiment Videos

  • Measurements were compared against a conventional Haag-Streit pachometer in 25 subjects.

    • Main Results:

    • The video pachometer yielded measurements of 512+/-20 microm (right eye) and 515+/-21 microm (left eye).
    • Conventional pachometry showed 530+/-22 microm (right eye) and 534+/-20 microm (left eye).
    • The average standard deviation for 10 consecutive measurements was similar for both devices (6.6 microm vs. 6.7 microm).

    Conclusions:

    • The developed video pachometer offers a fast and objective approach to corneal thickness assessment.
    • The instrument demonstrates ease of use and precision equivalent to established pachometers.
    • This technology has the potential to benefit numerous corneal studies.