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

Contact lens tonometry--application in humans

B Entenmann1, Y C Robert, P Pirani

  • 1University Eye Department, Universitätsspital, Zurich, Switzerland.

Investigative Ophthalmology & Visual Science
|December 31, 1997
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

Arthroscopic Latarjet procedure: analysis of the learning curve.

Musculoskeletal surgery·2013
Same author

Shoulder hemiarthroplasty for fractures of the proximal humerus.

Musculoskeletal surgery·2011
Same author

[Continuous intraocular pressure measurement: First results with a pressure-sensitive contact lens].

Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·2009
Same author

Self-pulsing in prism coupling into planar waveguides.

Optics letters·2009
Same author

Optical bistability by photothermal displacement in prism coupling into planar waveguides.

Optics letters·2009
Same author

[Tonometry in change. From indentation and applanation to contour adaptation].

Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·2005

The contact lens tonometer (CLT) offers a reliable method for measuring intraocular pressure (Po), analyzing ocular pulsation, and performing ophthalmodynamometry during slit-lamp examinations.

Area of Science:

  • Ophthalmology
  • Biomedical Engineering

Background:

  • Accurate intraocular pressure (Po) measurement is crucial for diagnosing and managing glaucoma.
  • Existing methods like Goldmann applanation tonometry require specific clinical settings and expertise.
  • Novel tonometer devices aim to simplify Po measurement and expand diagnostic capabilities.

Purpose of the Study:

  • To standardize clinical procedures for intraocular pressure (Po) measurement using the contact lens tonometer (CLT).
  • To explore the potential of CLT for analyzing ocular pulsation.
  • To evaluate the feasibility of performing ophthalmodynamometry with the CLT.

Main Methods:

  • Intraocular pressure (Po) was measured using the contact lens tonometer (CLT) and compared with Goldmann applanation pressure.
  • Ocular pulsation was assessed by recording Po over 30-70 seconds to analyze pulse amplitude.

Related Experiment Videos

  • Ophthalmodynamometry was performed during slit-lamp examination by observing the central retinal artery while increasing appositional force.

    • Main Results:

    • CLT measurements showed a high correlation with Goldmann applanation pressure (r=0.7 for right eye, r=0.68 for left eye).
    • Ocular pulse amplitude exhibited significant variability (1-9 mm Hg) and correlated with Po and age (r=0.55, r=0.59).
    • The difference in Po between the right and left eye was minimal (<0.5 mm Hg).

    Conclusions:

    • The contact lens tonometer (CLT) is a viable tool for intraocular pressure (Po) measurement during slit-lamp examinations.
    • CLT facilitates ophthalmoscopy, ocular pulsation assessment, and ophthalmodynamometry.
    • This method offers a standardized approach for comprehensive ocular assessment.