noun
retina
RET-ih-nuh/ˈretɪnə/
The light-sensitive tissue lining the back of the eye.
The retina converts incoming light into signals that travel to the brain.
Etymology
The Latin name retina probably evokes a 'net-like tunic': the network of blood vessels at the back of the eye supplied the image for naming this light-sensitive layer.
In context
there are about 130 million tiny cells in the retina that are sensitive to light when these cells detect light they turn it into electrical signals
More examples
- The eye doctor examines your retina for signs of disease.
- A torn retina requires prompt medical attention.
- Special cells in the retina help us see colors.
Forms
retina · retinas · retinae
retinal adjective — Relating to the retina of the eye.