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

Comparative evaluation of two new applanation tonometers-preliminary study

P I Condon, J L Ryan

    Documenta Ophthalmologica. Advances in Ophthalmology
    |September 30, 1977
    PubMed
    Summary

    Comparing Goldmann, E.M.T. 20, and pneumatonometer for intra-ocular pressure, the pneumatonometer is best for glaucoma diagnosis and control, while the E.M.T. 20 is suitable for screening.

    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

    Broadband optical modulation and control at millikelvin temperatures.

    The Review of scientific instruments·2025
    Same author

    Disparities in Demographics and Outcomes Based on Trauma Center Ownership.

    The Journal of surgical research·2022
    Same author

    The impact of effective paediatric adherence promotion interventions: systematic review and meta-analysis.

    Child: care, health and development·2015
    Same author

    Health-related quality of life in college students with and without childhood-onset asthma.

    The Journal of asthma : official journal of the Association for the Care of Asthma·2009
    Same author

    Nep1 Protein from Fusarium oxysporum Enhances Biological Control of Opium Poppy by Pleospora papaveracea.

    Phytopathology·2008
    Same author

    Post-treatment skin reactions reported by cancer patients differ by race, not by treatment or expectations.

    British journal of cancer·2007

    Area of Science:

    • Ophthalmology
    • Medical Devices
    • Glaucoma Research

    Background:

    • Intra-ocular pressure (IOP) is a critical metric in glaucoma management.
    • Accurate IOP measurement is essential for diagnosing and monitoring glaucoma.
    • Various tonometers exist, each with potential strengths and weaknesses.

    Purpose of the Study:

    • To compare the performance of three intra-ocular pressure (IOP) assessment devices: Goldmann applanation tonometer, E.M.T. 20, and Digilab Model 30R pneumatonometer.
    • To evaluate their suitability for screening, diagnosis, and management of glaucoma patients.

    Main Methods:

    • Preliminary studies conducted on a total of 114 glaucomatous eyes and 184 normal eyes from 162 patients.
    • Utilized Goldmann applanation tonometer, E.M.T. 20, and Digilab Model 30R pneumatonometer for IOP measurements.

    Main Results:

    • The E.M.T. 20 generally yielded lower readings than the Goldmann tonometer.
    • Within the normal IOP range, the pneumatonometer typically read 1-3 mm Hg higher than the Goldmann.
    • In glaucomatous eyes, the difference in readings between the pneumatonometer and Goldmann diminished, with similar results.
    • The E.M.T. 20 is ideal for glaucoma screening due to its fixed calibration and accuracy around 20 mm Hg.
    • The pneumatonometer's accuracy above 22 mm Hg makes it preferable for glaucoma diagnosis and management.

    Conclusions:

    • The E.M.T. 20 is a suitable instrument for glaucoma screening but not for stabilizing patients under treatment.
    • The pneumatonometer is the instrument of choice for the diagnosis and control of glaucoma due to its accuracy in the higher IOP range.
    • The pneumatonometer offers additional benefits including probe resilience and ocular pulse recording capability.

    Related Experiment Videos