plural retinas also retinae
ˈre-tə-ˌnē 
-ˌnī
: the sensory membrane that lines the eye, is composed of several layers including one containing the rods and cones, and functions as the immediate instrument of vision by receiving the image formed by the lens and converting it into chemical and nervous signals which reach the brain by way of the optic nerve see eye illustration
Examples of retina in a Sentence
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Zinc is essential for eye health and helps prevent damage to the retina.
—
Cynthia Sass, Mph, Health, 19 May 2024
This occurs when the macula, a part of the retina, is damaged.
—Avery Hurt, Discover Magazine, 29 Apr. 2024
See all Example Sentences for retina 
Cynthia Sass, Mph, Health, 19 May 2024
This occurs when the macula, a part of the retina, is damaged.
—Avery Hurt, Discover Magazine, 29 Apr. 2024
See all Example Sentences for retina
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'retina.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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“Retina.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/retina. Accessed 31 May. 2024.
Copy CitationKids Definition
retina
noun
ret·i·na
ˈret-ᵊn-ə
ˈret-nə
plural retinas also retinae
-ᵊn-ˌē
-ˌī
: the light-sensitive inner layer lining the back of the eye that contains the rods and cones and converts the images formed by the lens into signals which reach the brain by way of the optic nerve
retinal
adjective
-ᵊn-əl
-nəl
Medical Definition
retina
1 of 2 noun
ret·i·na
ˈret-ᵊn-ə, ˈret-nə
plural retinas also retinae
-ᵊn-ˌē
: the sensory membrane that lines most of the large posterior chamber of the vertebrate eye, is composed of several layers including one containing the rods and cones, and functions as the immediate instrument of vision by receiving the image formed by the lens and converting it into chemical and nervous signals which reach the brain by way of the optic nerve
Retin-A
2 of 2 trademark
Ret·in-A
ˌret-ᵊn-ˈā
—used for a preparation of tretinoin
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