What cranial nerves are involved in the sensory and the motor roles for the corneal blink reflex?

Explanation:

The optic (I) nerve, oculomotor (III) nerve, trochlear (IV) nerve and abducen (VI) nerve are the four cranial nerves implicated in eyes perception and motion function. The optic nerve of vision is the sensory nerve. It conveys information to the brain from the eyes.

The corneal blink reflex are caused from a loop between the trigeminal sensory nerves and the facial motor (VII) nerve innervation of the orbicularis oculi muscles.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.