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

The PAR Technology Corneal Topography System.

M W Belin1, D Litoff, S J Strods

  • 1Department of Ophthalmology, Albany Medical College, New York 12203.

Refractive & Corneal Surgery
|January 1, 1992
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

Author Correction: The root meristem is shaped by brassinosteroid control of cell geometry.

Nature plants·2022
Same author

The root meristem is shaped by brassinosteroid control of cell geometry.

Nature plants·2021
Same author

Approaches to Investigating Complex Genetic Traits in a Large-Scale Inbred Mouse Aging Study.

Veterinary pathology·2016
Same author

Extremity compartment syndrome and fasciotomy: a literature review.

European journal of trauma and emergency surgery : official publication of the European Trauma Society·2016
Same author

Keratoconus: The ABCD Grading System.

Klinische Monatsblatter fur Augenheilkunde·2016
Same author

Gasless laparoscopic surgery.

Surgical technology international·2015
Same journal

American Society for Cataract and Refractive Surgery. Summer symposium on refractive surgery. August 26-29, 1993 Los Angeles, Calif.

Refractive & corneal surgery·1993
Same journal

European Society of Cataract and Refractive Surgeons. 11th annual conference. August 29-September 2, 1993 Innsbruck, Austria.

Refractive & corneal surgery·1993
Same journal

International Society of Refractive Keratoplasty. 1993 Mid-Summer Symposium July 23-25, 1993. Minneapolis, Minn.

Refractive & corneal surgery·1993
Same journal

Opinions on mini-radial keratotomy.

Refractive & corneal surgery·1993
Same journal

Residual myopia after radial keratotomy successfully treated with Baikoff ZB5M IOLs.

Refractive & corneal surgery·1993
Same journal

Time-delayed, two-step excimer laser photorefractive keratectomy to correct high myopia.

Refractive & corneal surgery·1993
See all related articles

The PAR Technology Corneal Topography System (PAR CTS) offers accurate and reproducible corneal topography measurements. This advanced imaging device provides true elevation maps for clinical and research applications.

Area of Science:

  • Ophthalmology
  • Biomedical Engineering
  • Optical Imaging

Background:

  • Computer-assisted videokeratography is a valuable clinical tool, typically using placido disk images.
  • Existing systems require smooth, reflective surfaces for accurate readings.
  • The PAR Technology Corneal Topography System (PAR CTS) is a novel prototype utilizing a projected grid for corneal imaging.

Purpose of the Study:

  • To evaluate the accuracy and reproducibility of the PAR CTS.
  • To assess the system's capability in generating true topographic (elevation) maps.
  • To determine the suitability of the PAR CTS for clinical and research applications in ophthalmology.

Main Methods:

  • The PAR CTS was evaluated using three calibrated test spheres of known dioptric power.

Related Experiment Videos

  • Accuracy was assessed by measuring the test spheres with the PAR CTS and comparing to profilometer data.
  • Reproducibility was determined by having three investigators measure non-calibrated balls with repeated decentering and refocusing.

    • Main Results:

    • The PAR CTS demonstrated high accuracy, with system accuracy at an 8-millimeter test area ranging from 0.00 to 0.07 D.
    • Smaller test areas showed a potential decrease in accuracy.
    • Both intraobserver and interobserver variability were within acceptable limits, indicating good reproducibility.

    Conclusions:

    • The PAR CTS is a highly accurate and reproducible device for measuring corneal topography.
    • The system's ability to create true elevation maps is a significant advancement.
    • The PAR CTS shows promise for applications in ophthalmology, particularly in refractive surgery planning.