retinal

[ ret-n-uhl ]

Phonetic (Standard)IPA

adjective

retinal

[ ret-n-al, -awl ]

Phonetic (Standard)IPA

, Biochemistry.

an orange pigment, C 2 0 H 2 8 O, that is the active component of rhodopsin and is liberated upon the absorption of light in the vision cycle; vitamin A aldehyde.

Origin of retinal¹

First recorded in 1830–40; retin(a) + -al ¹

Origin of retinal²

First recorded in 1940–45; retin(a) + -al ³

To complement brain wiring, everyone walks around with retinal cams.

He saw Andy as his comrade in anti-retinal and utterly abnormal art.

What could come closer to the anti-retinal position of Duchamp than paintings so dark they can barely impinge on our retinas?

In order then to avoid diplopia the macula lutea moves to where the retinal image is formed.

Single vision was also present when looking strongly to one side, and with differentiation of one retinal image by a red glass.

This is generally accounted for by fatigue of the retinal process.

The retinal image of the object is not only vague, but also distorted.

Retinal hmorrhages are frequent and usually small, but a considerable hmorrhage may take place into the vitreous.

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