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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...
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
Accessory Structures of the Eye01:17

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Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
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Related Experiment Video

Updated: Jun 22, 2026

Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes
08:27

Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes

Published on: March 3, 2023

[Accommodation response fluctuation in myopia during sustained near work].

Dan Xu1, Xi Chen, Jing Yan

  • 1Optometry Clinic, Eye Hospital of Wenzhou Medical College, Wenzhou 325027, China.

[Zhonghua Yan Ke Za Zhi] Chinese Journal of Ophthalmology
|June 3, 2009
PubMed
Summary

Progressive myopia may be linked to sustained high accommodation response during near work. This suggests individuals with myopia might have a higher threshold for detecting blur, potentially driving myopia progression.

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Last Updated: Jun 22, 2026

Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes
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Published on: March 3, 2023

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Published on: February 23, 2018

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
07:06

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Published on: March 29, 2022

Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Context:

  • Sustained near work is a common activity associated with visual fatigue.
  • Myopia progression is a growing concern, particularly in younger populations.
  • Understanding the accommodative response during near tasks is crucial for myopia management.

Purpose:

  • To investigate differences in accommodative response curves during near work across refractive error groups.
  • To determine if individuals with myopia have a higher threshold for blur detection.
  • To explore the role of high accommodative response in myopia progression.

Summary:

  • Accommodation response was measured in emmetropes, stable myopes, and progressive myopes during one hour of near work.
  • While initial accommodation responses were similar, progressive myopes maintained a higher accommodation level later in the near work period.
  • Fluctuation patterns in accommodation response appear to correlate with defocus and blur sensitivity thresholds.

Impact:

  • Findings suggest that sustained high accommodation response in progressive myopes may contribute to myopia progression.
  • The study highlights the potential of accommodative response amplitude as an indicator of defocus and blur sensitivity.
  • This research could inform strategies for myopia control and visual hygiene during near tasks.