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

Axial length in applanation tonometry.

Harry H Mark1, Kim P Robbins, Tami L Mark

  • 1iimd@aol.com

Journal of Cataract and Refractive Surgery
|April 26, 2002
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

Can the GAD-7 be used to create valid, reliable, feasible and actionable outcome-focused paediatric anxiety quality measures for use across specialty and paediatric treatment settings?

BMJ open·2026
Same author

Cascade of Care for Opioid Use Disorder Among Medicaid Beneficiaries.

JAMA network open·2026
Same author

US National Spending On Mental Health And Substance Use Disorder Treatment Driven By Case Growth, 2000-21.

Health affairs (Project Hope)·2026
Same author

Opioid Treatment Programs' Medicaid Patient Retention Rates.

JAMA network open·2026
Same author

Suicide Deaths Among Medicaid Beneficiaries.

Psychiatric services (Washington, D.C.)·2025
Same author

Retention among Medicaid beneficiaries in opioid treatment programs in California.

Journal of substance use and addiction treatment·2025
Same journal

Comment on: Use of intracameral antibiotics prophylaxis in patients with posterior capsule rupture during cataract surgery: systemic review and meta-analysis.

Journal of cataract and refractive surgery·2026
Same journal

Dehydration and Rehydration Behavior of Ultra-High-Fluence Extracorporeal Cross-Linked Corneal Allogenic Intrastromal Ring Segments (ECO-CAIRS).

Journal of cataract and refractive surgery·2026
Same journal

Multimodal Deep Learning for Predicting Postoperative Vault and Selecting ICL Sizes Using AS-OCT and UBM Images.

Journal of cataract and refractive surgery·2026
Same journal

Reply: Evaluating large language models vs residents in cataract and refractive surgery: comparative analysis using the American Academy of Ophthalmology Self-Assessment Program.

Journal of cataract and refractive surgery·2026
Same journal

Comment on: Evaluating large language models vs residents in cataract and refractive surgery: comparative analysis using the American Academy of Ophthalmology Self-Assessment Program.

Journal of cataract and refractive surgery·2026
Same journal

Intracorneal Ring Segment Implantation with Epithelium-off Accelerated Cross-Linking for Pediatric Keratoconus: A 7-Year Retrospective Analysis.

Journal of cataract and refractive surgery·2026
See all related articles

Larger eye globes offer less resistance to applanation tonometry. Axial length measurements can help interpret intraocular pressure readings when they do not align with clinical findings.

Area of Science:

  • Ophthalmology
  • Biophysics

Background:

  • Applanation tonometry is a standard method for measuring intraocular pressure (IOP).
  • The physical principle suggests globe size affects IOP measurements.

Purpose of the Study:

  • To assess the clinical relevance of the principle that larger globes have less resistance to applanation.
  • To investigate the relationship between axial length and applanation tonometry readings.

Main Methods:

  • A regression analysis was performed on data from 513 adult eyes.
  • Axial length and applanation tonometry values were examined.

Main Results:

  • A significant negative correlation was observed between axial length and tonometry readings (P =.0002).
  • Each 1.0 mm increase in axial length corresponded to a 0.29 unit decrease in tonometry value.

Related Experiment Videos

  • Women had shorter mean axial lengths and higher mean IOP than men.

    • Conclusions:

    • Globe size demonstrably influences applanation tonometry results.
    • Axial length measurement is valuable for interpreting tonometry readings that appear inconsistent with clinical observations.