of or relating to the retina of the eye.
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.
retinal ret·i·nal (rět’n-āl’, -ôl’)
- Retinal adaptation
retinal adaptation n. Adjustment of the eye to the degree of illumination.
- Retinal cone
retinal cone n. See cone cell.
retinaldehyde ret·i·nal·de·hyde (rět’n-āl’də-hīd’) n. A yellow to orange aldehyde that is a derivative of vitamin A and acts in the retina to form the visual pigments of the rods and cones. Also called retinal, retinene1.
- Retinaldehyde isomerase
retinaldehyde isomerase n. See retinal isomerase.