Light has its dark rays--rays without effect upon our retinas, but not apparently on all. [Please select]
0
If we are born blind, or if injury or disease destroys the retinas of the eyes or makes the eyes opaque so that light cannot pass through to the retinas, then we cannot see. [Please select]
0
I am said to perceive a chair if the chair is present before me, if the light reflected from the chair is actually exciting my retinas. [Please select]
Do you have a better example in your mind? Please submit your sentence!