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Related Concept Videos

Vision01:24

Vision

59.2K
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.
59.2K
Visual System01:26

Visual System

1.6K
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...
1.6K
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

8.5K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
8.5K

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Related Experiment Video

Updated: Jan 1, 2026

The Gateway to the Brain: Dissecting the Primate Eye
07:37

The Gateway to the Brain: Dissecting the Primate Eye

Published on: May 27, 2009

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The primate model for understanding and restoring vision.

Serge Picaud1, Deniz Dalkara1, Katia Marazova1

  • 1Institut de la Vision, INSERM, CNRS, Sorbonne Université, F-75012 Paris, France.

Proceedings of the National Academy of Sciences of the United States of America
|December 25, 2019
PubMed
Summary
This summary is machine-generated.

Nonhuman primate models are vital for understanding vision and developing treatments for photoreceptor cell death, a leading cause of irreversible blindness. These models aid in advancing therapies for retinal degenerative diseases.

Keywords:
macaquenonhuman primateretinal diseasesvisionvision restoration

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Genetics

Background:

  • Photoreceptor cell death causes irreversible vision loss in retinal degenerative diseases.
  • The macula, crucial for high-acuity vision, is unique to primates.
  • Nonhuman primate (NHP) models are essential for studying vision and developing treatments.

Purpose of the Study:

  • To explore the value of NHP models in understanding human vision.
  • To review NHP models' contributions to developing innovative therapeutic strategies for vision restoration.

Main Methods:

  • Review of existing literature on NHP models in vision research.
  • Analysis of successful clinical translations and therapy approvals for retinal dystrophies.

Main Results:

  • NHP models are critical for elucidating biological mechanisms of high-acuity vision.
  • NHP models have facilitated the development and approval of therapies for inherited and age-related retinal dystrophies.

Conclusions:

  • NHP models are indispensable for advancing our understanding of human vision.
  • NHP models play a pivotal role in the development of novel therapeutic strategies to combat vision loss.