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Related Concept Videos

Vision01:24

Vision

Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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.
Accessory Structures of the Eye01:17

Accessory Structures of the Eye

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...
Anatomy of the Eyeball01:20

Anatomy of the Eyeball

The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle layer, the vascular tunic,...
Neuroplasticity01:01

Neuroplasticity

Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
Visual System01:26

Visual System

Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...

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Related Experiment Video

Updated: May 7, 2026

Visualizing Visual Adaptation
04:43

Visualizing Visual Adaptation

Published on: April 24, 2017

Active vision: adapting how to look.

Martina Poletti1, Michele Rucci

  • 1Department of Psychology, Boston University, Boston, MA 02215, USA.

Current Biology : CB
|September 14, 2013
PubMed
Summary
This summary is machine-generated.

Blocking central vision quickly creates a new fixation point that the brain maintains long-term. This discovery advances understanding of visual plasticity and rehabilitation strategies.

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Related Experiment Videos

Last Updated: May 7, 2026

Visualizing Visual Adaptation
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Published on: April 24, 2017

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss
07:12

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

VisualEyes: A Modular Software System for Oculomotor Experimentation
10:41

VisualEyes: A Modular Software System for Oculomotor Experimentation

Published on: March 25, 2011

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Visual Science

Background:

  • The brain exhibits remarkable plasticity, adapting to changes in sensory input.
  • Understanding how the visual system reorganizes is crucial for treating vision loss.

Purpose of the Study:

  • To investigate the adaptive mechanisms of the visual system following central vision loss.
  • To determine if a new preferred retinal locus of fixation can be established and maintained after artificial occlusion.

Main Methods:

  • Artificial occlusion of central vision was induced in participants.
  • The emergence and stability of a new preferred retinal locus of fixation were monitored over time.

Main Results:

  • Rapid development of a new preferred retinal locus of fixation was observed.
  • This new locus was maintained over the long term, demonstrating significant visual adaptation.

Conclusions:

  • Central vision occlusion induces rapid and lasting oculomotor plasticity.
  • Findings support the development of novel rehabilitation techniques for visual impairment.