A photoreceptor cell is a specialized type of neuroepithelial cell found in the retina that is capable of visual phototransduction. The great biological importance of photoreceptors is that they convert light (visible electromagnetic radiation) into signals that can stimulate biological processes.

2024年5月6日 · Photoreceptors are light-detecting cells that line the retinas of your eyes. They convert light into signals that your brain uses for your sense of vision.

2017年9月28日 · Photoreceptors are special cells in the eye’s retina that are responsible for converting light into signals that are sent to the brain.

2005年5月1日 · The photoreceptor consists of 1) an outer segment, filled with stacks of membranes (like a stack of poker chips) containing the visual pigment molecules such as rhodopsins, 2) an inner segment containing mitochondria, ribosomes and membranes where opsin molecules are assembled and passed to be part of the outer segment discs, 3) a cell …

2024年10月9日 · Photoreceptors are cells in the retina that detect light and affect color perception. The retina is the light-sensitive part at the back of the eye. There are two photoreceptor types: rods and cones. Signals from these photoreceptors are sent to the brain for processing via the optic nerve.

In both vertebrate photoreceptors and rhabdoms, each photoreceptor cell contains a nucleus, an energy-producing region with mitochondria (in the inner segment in rods and cones), and an axon that conveys electrical signals to the next neurons in the processing chain.

The aim of this Cell Science at a Glance article and the accompanying poster is to highlight our current understanding of photoreceptor structure, phototransduction, the visual cycle, OS renewal, protein trafficking and retinal degenerative diseases.