Retina

/ˈrɛtɪnə/

Meaning & Definition

noun
The light-sensitive layer of tissue at the back of the inner eye that transmits visual signals to the brain.
The doctor examined the patient's retina to check for any signs of damage.
A term used to refer to the actual photosensitive tissue contained in the eye.
Photoreceptor cells in the retina play a crucial role in our ability to see.
In broader contexts, it may also refer to a similar structure in artificial devices that mimic the function of the human retina.
The new camera technology aims to replicate the functions of the human retina to improve image clarity.

Etymology

From Latin 'retina', meaning 'net', referring to the net-like appearance of the tissue.

Common Phrases and Expressions

retinal tear
A condition where there is a break in the retina that can lead to detachment.
retinal detachment
A serious condition where the retina pulls away from its normal position.
retinal scan
A procedure that captures an image of the retina for medical analysis.

Related Words

photoreceptor
Cells in the retina that detect light.
macula
The central area of the retina responsible for sharp vision.
optic nerve
The nerve that transmits visual information from the retina to the brain.

Slang Meanings

Retinal gang
He's got a serious retinal gang going on; his eyesight is sharper than anyone else's.
Retina sighting
That art is so vivid, it gives me a retinal sighting every time I look at it.