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

Validity of the laser refraction technique for determining cylindrical error.

D Phillips, W Sterling

    American Journal of Optometry and Physiological Optics
    |May 1, 1975
    PubMed
    Summary

    A novel laser refraction technique accurately measures spherical error in eyes. However, its accuracy for measuring astigmatism is insufficient for clinical use, though findings for against-the-rule astigmatism are discussed.

    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

    A randomized controlled trial of Internet-delivered guided and unguided cognitive behaviour therapy for treating depression and anxiety in UK university students: study protocol for the Nurture-U Internet CBT trial.

    Trials·2025
    Same author

    Co-design of a Mobile Stroke Unit pathway highlights uncertainties and trade-offs for viable system-wide implementation in the English and Welsh NHS.

    BMC emergency medicine·2025
    Same author

    A randomized controlled trial of a self-guided mobile app targeting repetitive negative thought to prevent depression in university students: study protocol of the Nurture-U Reducing Worry prevention trial.

    BMC psychiatry·2024
    Same author

    Granulomatosis with Polyangiitis: A Rare but Clinically Important Disease for the Otolaryngologist.

    Nigerian journal of clinical practice·2024
    Same author

    Ecological disturbance alters the adaptive benefits of social ties.

    Science (New York, N.Y.)·2024
    Same author

    Natural disaster alters the adaptive benefits of sociality in a primate.

    bioRxiv : the preprint server for biology·2023

    Area of Science:

    • Ophthalmology
    • Optometry
    • Biomedical Optics

    Background:

    • Accurate refractive error measurement is crucial for vision correction.
    • Existing methods for measuring spherical error and astigmatism have limitations.
    • Advancements in laser technology offer potential for improved eye measurements.

    Purpose of the Study:

    • To evaluate the validity of a laser refraction technique for determining ocular refractive errors.
    • To compare laser-based measurements of spherical error and astigmatism with standard clinical methods.
    • To assess the potential clinical utility of the laser technique for refractive assessment.

    Main Methods:

    • A laser refraction technique was employed to measure spherical error across three meridians in 50 eyes.

    Related Experiment Videos

  • Spherical error, cylindrical axis, and power were calculated from laser measurements.
  • Laser-derived refractive data were compared against findings from conventional, non-laser measurement methods.

    • Main Results:

    • The laser refraction technique demonstrated high correlation with standard methods for spherical error determination, indicating its validity.
    • Correlations between laser and non-laser measurements for cylindrical error (astigmatism) were not sufficiently high for clinical adoption.
    • Specific findings regarding the laser technique's validity for against-the-rule astigmatism were analyzed.

    Conclusions:

    • The laser refraction technique is a valid and promising method for measuring spherical error.
    • Further refinement is needed for the laser technique to accurately measure astigmatism in clinical practice.
    • The study highlights the potential and limitations of laser technology in ophthalmic diagnostics.