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

Postblink changes in the ocular modulation transfer function measured by a double-pass method.

Robert Montés-Micó1, Jorge L Alió, W Neil Charman

  • 1Research, Development and Innovation Department, VISSUM Ophthalmologic Institute of Alicante, Alicante, Spain. roberto-montes@uv.es

Investigative Ophthalmology & Visual Science
|November 24, 2005
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

FS-LASIK for the treatment of moderate-to-high hyperopia.

Journal of cataract and refractive surgery·2023
Same author

Latest Development in Extended Depth-of-Focus Intraocular Lenses: An Update.

Asia-Pacific journal of ophthalmology (Philadelphia, Pa.)·2023
Same author

Editorial: Regenerative surgery of the cornea.

Frontiers in medicine·2023
Same author

A three-dimensional morpho-volumetric similarity study of Down syndrome keratopathy vs. keratoconus.

Eye and vision (London, England)·2023
Same author

Ocular findings in a Spanish cohort of myotonic dystrophy type 1.

Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie·2022
Same author

Multifocal intraocular lens exchange to monofocal for the management of neuroadaptation failure.

Eye and vision (London, England)·2022

Optimal retinal image quality, measured by the modulation transfer function (MTF), peaks approximately 6 seconds after a blink in healthy eyes. This suggests blinking does not primarily occur due to a loss in optical quality.

Area of Science:

  • Ophthalmology and Vision Science
  • Optical Engineering
  • Human Physiology

Background:

  • Blinking is a fundamental physiological action that clears the ocular surface and protects the eye.
  • The impact of blinking on the eye's optical performance, specifically image quality, is not fully understood.
  • Previous assessments of optical quality often rely solely on wavefront aberrations, potentially overlooking other factors.

Purpose of the Study:

  • To investigate the dynamic changes in the eye's modulation transfer function (MTF) following a blink.
  • To determine the time course of retinal image quality restoration after eyelid closure.

Main Methods:

  • The study measured the distance modulation transfer function (MTF) using a 5-mm pupil in 20 healthy young adults.
  • Measurements were taken from double-pass retinal images at intervals ranging from 1 to 15 seconds post-blink.

Related Experiment Videos

  • This method incorporated wavefront aberrations, scattered light, and focus errors for a comprehensive assessment.

    • Main Results:

    • The highest modulation transfer function (MTF) values, indicating optimal retinal image quality, were observed around 6 seconds after a blink.
    • This finding held true across various criteria used to define optimal image quality.

    Conclusions:

    • The study confirms that optimal retinal image quality is achieved at a specific time point after blinking.
    • The inclusion of stray light and focus errors did not alter the conclusion that image quality improves post-blink.
    • These findings suggest that a decline in optical quality is unlikely to be the primary trigger for normal blinking.