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Related Concept Videos

Vision01:24

Vision

52.9K
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.
52.9K
Visual System01:26

Visual System

551
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...
551
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

593
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.
593

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Related Experiment Video

Updated: Jun 7, 2025

Author Spotlight: Insights into Visual Cortex Research Through Wide-View fMRI Mapping
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Author Spotlight: Insights into Visual Cortex Research Through Wide-View fMRI Mapping

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Hopeful progress in artificial vision.

Aakash M Shah

    Artificial Organs
    |November 19, 2024
    PubMed
    Summary
    This summary is machine-generated.

    Glasses have corrected vision for ages. Newer technologies like brain-computer interfaces and eye implants may soon correct severe visual impairment.

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    Area of Science:

    • Ophthalmology and Neuroscience
    • Biomedical Engineering

    Background:

    • Eyeglasses have historically corrected refractive errors and mild visual impairments.
    • Advancements in technology are exploring novel methods for vision restoration.

    Discussion:

    • The limitations of traditional corrective lenses necessitate exploration of advanced solutions.
    • Emerging technologies offer potential for restoring sight in cases of severe visual impairment.

    Key Insights:

    • Brain-computer interfaces (BCIs) represent a paradigm shift in sensory augmentation.
    • Ocular implants are being developed to directly interface with the visual system.

    Outlook:

    • Future research will focus on refining BCI and ocular implant efficacy and safety.
    • These technologies hold promise for significantly improving the quality of life for individuals with severe vision loss.