If two objects cast the same size on the retina, they necessarily will be viewed as the same size.

Question

Quizplus · Accepted Answer

The size of an object on the retina depends not only on the actual size of the object, but also on its distance from the eye. Objects that are farther away will cast the same size on the retina as objects that are closer, but they will be perceived as smaller due to the phenomenon of size constancy. Therefore, two objects that cast the same size on the retina may not be viewed as the same size.

If Two Objects Cast the Same Size on the Retina