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

Simple pointspread retinoscope suitable for vision screening.

H C Howland, N Sayles, C Cacciotti

    American Journal of Optometry and Physiological Optics
    |February 1, 1987
    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

    Proton Beam Therapy for Cancer in Children and Adolescents: A Retrospective Canadian Paediatric Tumour Consortium Study.

    Clinical oncology (Royal College of Radiologists (Great Britain))·2026
    Same author

    Infrared photoretinoscope.

    Applied optics·2010
    Same author

    Orbital orientation is not visual orientation: a comment on "X-ray Vision and the evolution of forward-facing eyes" by M.A. Changizi and S. Shimojo.

    Journal of theoretical biology·2009
    Same author

    Effect of larger ablation zone and transition zone on corneal optical aberrations after photorefractive keratectomy.

    Archives of ophthalmology (Chicago, Ill. : 1960)·2001
    Same author

    Refractive state and accommodation in the eyes of free-swimming versus restrained juvenile lemon sharks (Negaprion brevirostris).

    Vision research·2001
    Same author

    How large is the optic disc? Systematic errors in fundus cameras and topographers.

    Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2001
    Same journal

    Visual decrement with deposit accumulation of HEMA contact lenses.

    American journal of optometry and physiological optics·1988
    Same journal

    Stiles-Burch two-degree color mixture data.

    American journal of optometry and physiological optics·1988
    Same journal

    Undercorrection and myopia development.

    American journal of optometry and physiological optics·1988
    Same journal

    The International Optometric and Optical League.

    American journal of optometry and physiological optics·1988
    Same journal

    Quantitative photorefraction using an off-center flash source.

    American journal of optometry and physiological optics·1988
    Same journal

    An objective VER assessment of visual acuity compared with subjective measures.

    American journal of optometry and physiological optics·1988
    See all related articles

    A new pointspread retinoscope offers an easy, inexpensive method for estimating eye defocus. This tool shows promise for large-scale vision screening, correlating well with established photorefractive methods in children.

    Area of Science:

    • Ophthalmology
    • Optometry
    • Vision Science

    Background:

    • Accurate refractive error assessment is crucial for pediatric eye care.
    • Existing methods like photorefraction can be complex or costly for widespread screening.

    Purpose of the Study:

    • To introduce a simple, cost-effective pointspread retinoscope for estimating ocular defocus.
    • To evaluate the usability and accuracy of this novel retinoscopy technique.

    Main Methods:

    • Developed a pointspread retinoscope based on optical principles similar to photoretinoscopy.
    • Calibrated the device using an artificial eye with known defocus.
    • Compared pointspread retinoscopy measurements with meridional photorefractive data in infants and young children.

    Related Experiment Videos

    Main Results:

    • The pointspread retinoscope effectively estimates the degree of eye defocus by observing the fundal reflex.
    • Calibration against an artificial eye confirmed its accuracy.
    • Significant correlation was found between pointspread retinoscopy and meridional photorefractive measurements in pediatric subjects.

    Conclusions:

    • The pointspread retinoscope is a viable, user-friendly tool for vision screening.
    • Its low cost and ease of use make it suitable for large-scale screening efforts.
    • The method demonstrates good agreement with established photorefractive techniques, particularly in young children.