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

Vertical optic disk diameter: discrepancy between planimetric and SLO measurements

A F Spencer1, S A Sadiq, P Pawson

  • 1Department of Ophthalmology, University Hospital, Nottingham, United Kingdom.

Investigative Ophthalmology & Visual Science
|April 1, 1995
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

Exploring beliefs and distress in patients with facial palsies.

Psychology, health & medicine·2021
Same author

Psychological distress and coping following eye removal surgery.

Orbit (Amsterdam, Netherlands)·2019
Same author

How to defuse a demographic time bomb: the way forward?

Eye (London, England)·2017
Same author

The urgent need to develop emergency EYE care in the UK: the way forward?

Eye (London, England)·2017
Same author

Prevalence of age-related macular degeneration in an elderly UK Caucasian population-The Bridlington Eye Assessment Project: a cross-sectional study.

Eye (London, England)·2017
Same author

Comments on 'Confidence of ophthalmology trainees in the management of posterior capsule rupture and vitreous loss'.

Eye (London, England)·2016
Same journal

Loss of ATRAID in Late-Onset, Non-Syndromic Retinitis Pigmentosa.

Investigative ophthalmology & visual science·2026
Same journal

Whole-Exome Analysis Identifies Candidate Genes Associated With Diabetic Retinopathy.

Investigative ophthalmology & visual science·2026
Same journal

Antiseptic Efficacy and Ocular Surface Toxicity of Povidone-Iodine and Chlorhexidine for Endophthalmitis Isolates.

Investigative ophthalmology & visual science·2026
Same journal

Ocular IL-1α/IFN-γ Delay the Corneal Wound Healing in Rheumatoid Arthritis Through Mitochondrial Dysfunction and NLRP3 Inflammasome Activation.

Investigative ophthalmology & visual science·2026
Same journal

New Guidelines for Ophthalmic Genetic Studies.

Investigative ophthalmology & visual science·2026
Same journal

Genomic Copy Number Variants Associated With Strabismus and Amblyopia in the All of Us Research Program.

Investigative ophthalmology & visual science·2026
See all related articles

Heidelberg Retinal Tomograph (HRT) measurements of optic disk vertical diameter are consistently smaller than photographic methods. These differences mean HRT and photographic measurements are not interchangeable for clinical use.

Area of Science:

  • Ophthalmology
  • Medical Imaging

Background:

  • Accurate measurement of the optic disk's vertical diameter is crucial for diagnosing and monitoring optic nerve conditions.
  • The Heidelberg Retinal Tomograph (HRT) is a common tool for optic nerve head imaging, but its measurements need validation against established methods.

Purpose of the Study:

  • To compare vertical optic disk diameter measurements obtained using the Heidelberg Retinal Tomograph (HRT) with those derived from planimetric analysis of fundus photographs.

Main Methods:

  • Three vertical disk diameter measurements were taken on 32 eyes using the HRT's circle draw facility and central tomographic cuts.
  • Measurements were repeated by a second observer and compared to photographic measurements using three specific correction methods.

Main Results:

Related Experiment Videos

  • Heidelberg Retinal Tomograph (HRT) measurements showed minimal intraobserver and interobserver variation.
  • HRT measurements were consistently smaller by 0.13 mm compared to photographic measurements, even with optimal correction (correction 3, r=0.8258).
  • Significant differences were observed between HRT composite images and central tomographic cuts.

Conclusions:

  • Heidelberg Retinal Tomograph (HRT) measurements of vertical optic disk diameter are significantly smaller than those from photographic methods.
  • Due to systematic differences, HRT and photographic measurements are not interchangeable for clinical assessment.