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Color Vision

Color Vision

Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.

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Related Experiment Video

Updated: Jul 16, 2025

Regenerative Therapy by Suprachoroidal Cell Autograft in Dry Age-related Macular Degeneration: Preliminary In Vivo Report

Regenerative Therapy by Suprachoroidal Cell Autograft in Dry Age-related Macular Degeneration: Preliminary In Vivo Report

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Vision restoration: Little red booster.

¹Department of Psychology, University of York, York YO10 5DD, UK; York Biomedical Research Institute, University of York, York YO10 5DD, UK.

Current Biology : CB

|September 12, 2023

Summary

This summary is machine-generated.

Gene therapy shows promise for restoring colour vision in individuals with congenital achromatopsia. Behavioural experiments were conducted to assess the effectiveness of this innovative treatment approach.

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Area of Science:

Ophthalmology
Genetics
Neuroscience

Background:

Congenital achromatopsia is a rare inherited retinal disorder.
It results in significantly reduced visual acuity and complete absence of colour vision.

Purpose of the Study:

To evaluate the efficacy of gene therapy in restoring colour vision.
To assess behavioural changes in patients undergoing treatment.

Main Methods:

The study involved a series of carefully designed behavioural experiments.
These experiments specifically targeted the assessment of colour vision capabilities.

Main Results:

Preliminary results indicate potential improvements in colour perception.
Further data analysis is ongoing to confirm the extent of vision restoration.

Conclusions:

Gene therapy presents a potential therapeutic avenue for congenital achromatopsia.
Behavioural assessments are crucial for quantifying treatment outcomes.