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 Concept Videos

Focusing of Light in the Eye01:16

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
Influence of Earth's Curvature and Atmospheric Refraction on Leveling01:26

Influence of Earth's Curvature and Atmospheric Refraction on Leveling

During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
Time and frequency -Domain Interpretation of Phase-lag Control01:21

Time and frequency -Domain Interpretation of Phase-lag Control

Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any finite,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Halo Measurements in Simulated Multifocal Intraocular Lenses.

Translational vision science & technology·2026
Same author

Single-shot, depth-encoded multiplexed OCT for multi-spot tracking of induced transient corneal dynamics.

Biomedical optics express·2026
Same author

Reconstruction of the crystalline lens full-geometry from OCT images acquired with off-axis viewing.

Scientific reports·2026
Same author

Predictions of Through-Focus Performance of Presbyopia-Correcting Intraocular Lenses in Presbyopic Subjects Using a Visual Simulator.

Ophthalmology science·2026
Same author

Crystalline lens geometry from a clinical OCT-based biometer in pre-cataract surgery patients.

Research square·2026
Same author

Photobonding of silk fibroin-based hydrogels to rabbit corneas.

Frontiers in bioengineering and biotechnology·2026
Same journal

Analysis of human visual experience data.

Journal of vision·2026
Same journal

Pyramid-based Bayesian modeling for high-resolution behavioral analysis.

Journal of vision·2026
Same journal

Sensation without perception: The white whale effect and perceptual blindness in autonomous vehicles.

Journal of vision·2026
Same journal

Gaze behavior during closed-captioned movie viewing adapts to absent audio through more frequent switching between text and scene.

Journal of vision·2026
Same journal

In pursuit of saccade awareness: Limited volitional control and minimal conscious access to catch-up saccades during smooth pursuit eye movements.

Journal of vision·2026
Same journal

Dissociable effects of element-lifetime and stimulus-duration on local and global motion processing: An equivalent noise study.

Journal of vision·2026
See all related articles

Related Experiment Video

Updated: Jun 20, 2026

Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher
05:14

Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher

Published on: February 23, 2018

Accommodative lag and fluctuations when optical aberrations are manipulated.

Enrique Gambra1, Lucie Sawides, Carlos Dorronsoro

  • 1Instituto de Optica, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain. e.gambra@io.cfmac.csic.es

Journal of Vision
|September 19, 2009
PubMed
Summary
This summary is machine-generated.

Correcting natural eye aberrations using adaptive optics improves accommodation response and reduces fluctuations. This study shows that optical aberrations significantly impact vision clarity and focusing ability.

More Related Videos

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

Bringing the Visible Universe into Focus with Robo-AO
10:35

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Related Experiment Videos

Last Updated: Jun 20, 2026

Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher
05:14

Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher

Published on: February 23, 2018

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

Bringing the Visible Universe into Focus with Robo-AO
10:35

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Area of Science:

  • Ophthalmology
  • Vision Science
  • Optical Engineering

Background:

  • Ocular aberrations, including spherical aberration and coma, can affect visual performance.
  • Adaptive optics (AO) technology offers a method to measure and correct these aberrations in real-time.

Purpose of the Study:

  • To investigate the impact of natural, corrected, and induced ocular aberrations on the accommodative response.
  • To determine if adaptive optics correction of aberrations improves or degrades accommodative function.

Main Methods:

  • An adaptive optics electromagnetic deformable mirror was used to control aberrations.
  • The accommodative response was measured using a Hartmann-Shack wavefront sensor in 5 subjects.
  • Stimuli ranged from 0 to 6 D under conditions of natural, corrected, and induced aberrations (+1 µm and -1 µm spherical aberration, -2 µm vertical coma).

Main Results:

  • Four out of five subjects exhibited improved accommodative response with AO correction compared to natural aberrations.
  • Negative spherical aberration induction also enhanced accommodative response in these subjects.
  • Positive spherical aberration and coma induction increased accommodative lag, while AO correction reduced it.

Conclusions:

  • Ocular aberrations significantly influence accommodative lag and response fluctuations.
  • Adaptive optics correction of aberrations enhances, rather than compromises, the accommodative response.
  • This highlights the importance of aberration control for optimal visual function.