Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Focusing of Light in the Eye

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...

You might also read

Related Articles

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

Sort by

Same author

Improving multifocal contact lens fitting by replicating their fitting guides using the SimVis Gekko visual simulator.

Contact lens & anterior eye : the journal of the British Contact Lens Association·2025

Same author

Perceptual cost and benefit of presbyopia-correcting intraocular lenses: effect of energy balance, addition, and adaptation.

Biomedical optics express·2025

Same author

Visual simulation of intraocular lenses: from on-bench performance to computational and experimental validations.

Biomedical optics express·2024

Same author

Simulation of daily soft multifocal contact lenses using SimVis Gekko: from in-vitro and computational characterization to clinical validation.

Scientific reports·2024

Same author

Long-range frequency-domain optical delay line based on a spinning tilted mirror for low-cost ocular biometry.

Biomedical optics express·2024

Same author

Optical beam scanner with reconfigurable non-mechanical control of beam position, angle, and focus for low-cost whole-eye OCT imaging.

Biomedical optics express·2023

Search research articles

Related Experiment Video

Updated: Jun 11, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

Dynamic accommodation with simulated targets blurred with high order aberrations.

Enrique Gambra¹, Yinan Wang, Jing Yuan

¹Instituto de Optica, Consejo Superior de Investigaciones Científicas, Madrid, Spain. e.gambra@io.cfmac.csis.es

Vision Research

|July 6, 2010

Summary

This summary is machine-generated.

High order aberrations significantly impair dynamic visual accommodation. Increased aberrations reduce accommodative gain and increase phase lag, impacting visual clarity.

More Related Videos

Bringing the Visible Universe into Focus with Robo-AO

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Medical-grade Sterilizable Target for Fluid-immersed Fetoscope Optical Distortion Calibration

Medical-grade Sterilizable Target for Fluid-immersed Fetoscope Optical Distortion Calibration

Published on: February 23, 2017

Related Experiment Videos

Last Updated: Jun 11, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

Bringing the Visible Universe into Focus with Robo-AO

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Medical-grade Sterilizable Target for Fluid-immersed Fetoscope Optical Distortion Calibration

Medical-grade Sterilizable Target for Fluid-immersed Fetoscope Optical Distortion Calibration

Published on: February 23, 2017

Area of Science:

Ophthalmology
Vision Science
Optical Engineering

Background:

High order aberrations are implicated in visual system function.
Understanding their impact on accommodation is crucial for visual optics.

Purpose of the Study:

To investigate the effect of retinal blur from high order aberrations on dynamic visual accommodation.
To quantify the relationship between aberration-induced contrast degradation and accommodative response.

Main Methods:

Measured accommodative response to sinusoidal demand (1-3D) under varying levels of simulated high order aberrations (defocus, coma, trefoil, spherical aberration).
Induced aberrations at 0.3 and 1 micrometers for a 3-mm pupil.
Analyzed accommodative gain and phase lag in relation to target contrast degradation.

Main Results:

Accommodative gain significantly decreased with 1-micrometer aberration induction.
A strong correlation was observed between relative accommodative gain, phase lag, and target contrast degradation at relevant spatial frequencies.

Conclusions:

High order aberrations, particularly at higher levels, degrade dynamic visual accommodation.
Contrast degradation caused by aberrations is a key factor influencing accommodative accuracy and timing.