For Vision to Occur, Light Must Pass Through the Eye

Question

For vision to occur, light must pass through the eye and _______.
A) stimulate the iris
B) form an image on the retina
C) refract the lens
D) stimulate opsin and retinal to form rhodopsin

Accepted Answer

Light must pass through the eye and form an image on the retina in order for vision to occur. The retina contains photoreceptor cells called rods and cones which convert the light into neural signals that are sent to the brain for interpretation. The other options given are not directly involved in the process of forming a visual perception.