Origin: Latin suffix -al
Retinal has 4 different meanings across 2 categories:
A yellow to orange aldehyde derived from vitamin A that is formed from rhodopsin by the action of light and in combination with proteins forms the visual pigments of the retinal rods and cones.
"The scientist explained that when blue light strikes the eye, it causes a chemical change in retinal within the rod cells that triggers the signal sent to the brain for vision."
Of or pertaining to the retina.
"The doctor explained that her retinal scan revealed early signs of diabetes-related damage to the back of her eye."