How do you use the word "retina" in a sentence?

Here are real-life examples of using "retina": The image projected onto the retina is inverted. The security system scanned Tom's retina.

Retina Meaning

/ˈɹɛt.ɪ.nə/

Definition, CEFR level C1, pronunciation, examples, and quiz.

Definition

nounThe thin layer of cells at the back of the eyeball that contains rods and cones sensitive to light, which trigger nerve impulses that pass via the optic nerve to the brain, where a visual image is formed.

Sentence Examples

The image projected onto the retina is inverted.

The security system scanned Tom's retina.

CEFR Practice Quiz

The optometrist used a camera to photograph the ____ at the back of the eye.

CEFR Practice Quiz (Alternate)

The doctor used a special instrument to examine the ____ at the back of the patient's eye.

Word Origin & History

From Middle English rethina, borrowing from Medieval Latin rētīna (“retina”, feminine noun), ellipsis of tunica rētīna (“net-like tunic”), used to describe the blood vessel system at the back of the eye. The phrase is attested in the 12th century in Guillelmus the abbot and Gerard of Cremona—the latter may have created this phrase as a translation for Arabic طَبَقَة شَبَكِيَّة (ṭabaqa šabakiyya) "net-like layer", which translates Ancient Greek ἀμφιβληστροειδής χῐτών (amphiblēstroeidḗs khĭtṓn, “retina”), which is attested in the ancient medical writer Galen.

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