This printable crossword puzzle on the topic of Psychology & Sociology has 13 clues. Answers range from 4 to 18 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
The opening in the colored part of the eye that determines the amount of light that enters
Adjusts to the distance of objects by changing its thickness
Sensitive surface in the eye
Neurons that are sensitive to light
When light hits the point where the optic nerve leaves the eye, the eye registers nothing because that area lacks photoreceptors
A kind of photoreceptor that provides color vision
The sharpness of vision
The colors across from each other on the color wheel
Visual impression that remains after the original image is removed
A kind of photoreceptor that is sensitive only to the brightness of light
Adjustment to lower lighting
Tells you whether you are physically upright without having to use your eyes
People who are partially or totally unable to distinguish color due to an absence of the cones