The ability of the Eye to see in the dark, is due to the production of a purple pigment known as________?

A. Carotene
B. Rhodopsin
C. Iodopsin
D. Retinene

Retinene is better known as retinaldehyde or simply retinal and is fundamental in the transduction of light into visual signals in the photoreceptor level of the retina (known as the visual cycle). Retinene is more formally known as dehydroretinaldehyde.

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