Layer of rods and cones
Layer of rods and cones
The Layer of rods and cones (pronunciation: /ˈleɪ.ər ɒv rɒdz ænd koʊnz/) is a layer in the retina of the eye that contains photoreceptor cells, namely the rod cells and cone cells. These cells are responsible for converting light into electrical signals that the brain can interpret as visual images.
Etymology
The term "Layer of rods and cones" is derived from the presence of rod-shaped and cone-shaped cells in this layer of the retina. The term "rod" comes from the Old English "rodd", meaning a straight, slender piece, while "cone" comes from the Greek "kōnos", meaning a point or peak.
Function
The Layer of rods and cones plays a crucial role in the process of vision. The rod cells are responsible for vision in low light conditions, while the cone cells are responsible for color vision and detail in well-lit conditions.
Related Terms
- Photoreceptor cell: A type of neuron in the retina that converts light into signals that can be processed by the brain.
- Rod cell: A type of photoreceptor cell in the retina that is responsible for vision in low light conditions.
- Cone cell: A type of photoreceptor cell in the retina that is responsible for color vision and detail in well-lit conditions.
- Retina: The light-sensitive layer of tissue at the back of the inner eye that translates light into nerve signals.
- Eye: The organ of sight, in humans and animals, where visual images are formed.
External links
- Medical encyclopedia article on Layer of rods and cones
- Wikipedia's article - Layer of rods and cones
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