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/ˈɹɛt.ɪ.nə/ · noun
(ophthalmology) The 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..
Use retina when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Retina means (ophthalmology) The 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..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use retina where its definition matches the intended context.
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