Target intelligence / Profile preview

Photoreceptor Cells

Molecular classification
Neuroepithelial cells
01

Overview

Photoreceptor cells are specialized neuroepithelial cells in the retina responsible for converting light into electrical signals. There are two main types: rods for low-light vision and cones for bright-light and color vision. They contain photopigments (rhodopsin in rods, photopsins in cones) that initiate a phototransduction cascade upon photon absorption, leading to changes in membrane potential and neurotransmitter release. Dysfunction or degeneration of photoreceptors can result in various visual impairments.

02

Biological functions

PhototransductionVision (scotopic and photopic)Light detectionNeurotransmission
03

Disease associations

Retinitis pigmentosaMacular degenerationColor blindnessOther retinal dystrophies
04

Safety considerations

Photoreceptor degeneration can lead to blindnessGenetic defects in photoreceptor proteins can cause various visual impairments

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