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

Proximally induced accommodation and accommodative adaptation.

M Rosenfield1, K J Ciuffreda, E Ong

  • 1Schnurmacher Institute for Vision Research, Department of Vision Sciences, SUNY/State College of Optometry, NY 10010.

Investigative Ophthalmology & Visual Science
|June 1, 1990
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

Discriminating migraine aura from transient ischemic attack using MRI-based oxygen metabolism mapping: A preliminary study.

Headache·2026
Same author

A universal digital control concept for end-to-end manufacturing.

International journal of pharmaceutics·2025
Same author

British HIV Association guidelines on the management of opportunistic infection in people living with HIV: The clinical management of non-tuberculous mycobacteria 2024.

HIV medicine·2025
Same author

Safety and efficacy of reperfusion therapies in acute ischemic stroke related to left ventricular thrombus: A retrospective cohort study.

Revue neurologique·2024
Same author

Does Gadolinium Deposition Lead to Metabolite Alteration in the Dentate Nucleus? An MRS Study in Patients with MS.

AJNR. American journal of neuroradiology·2022
Same author

Late-onset neuromyelitis optica spectrum disorder: A case series from Iran.

Revue neurologique·2021

Proximally induced accommodation (PIA) can cause accommodative adaptation. Adaptation magnitude was lower for distant targets and inversely related to pre-task tonic accommodation (TA).

Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Accommodation is the eye's ability to adjust focus.
  • Understanding accommodative adaptation is crucial for visual optics.
  • Proximally induced accommodation (PIA) is a key factor in visual tasks.

Purpose of the Study:

  • To investigate the influence of PIA on accommodative adaptation.
  • To quantify the shift in tonic accommodation (TA) after specific visual tasks.

Main Methods:

  • 10 subjects viewed targets at 0.33 m and 5 m for 5 minutes.
  • A negative lens equated dioptric stimuli to 3 D for the distal target.
  • Subjective steady-state accommodative response measured using a Hartinger coincidence optometer.

Related Experiment Videos

Main Results:

  • A significant correlation between adaptation degrees for near and far targets was found.
  • Adaptation magnitude was approximately halved for the distant target compared to the near target.
  • Adaptation magnitude showed an inverse correlation with pre-task TA.

Conclusions:

  • PIA demonstrably induces accommodative adaptation.
  • Findings offer insights into the mechanisms of accommodation.
  • Results may inform future models of the human accommodative system.