My Crossword Maker Logo
Powered by BrightSprout
Save Status:
or to save your progress. The page will not refresh.
Controls:
SPACEBAR SWITCHES TYPING DIRECTION
Answer Key:
Edit a Copy:
Make Your Own:
Crossword Word Search Worksheet
Rate This Puzzle:
Log in or sign up to rate this puzzle.

The Human Eye -- correct

Across
The structure that converts light into usable neural messages is called the ___________
What is the process by which the thickness of the lens is changed in order to focus light properly?
Detect color, good in bright light
Down
___________ theory states that there are three types of cones in the retina, each of which responds primarily to a different color.
A woman with blue eyes could be described as having blue pigment in her __________
Used for dim light, largely insensitive to color
Light entering the eye first passes through the _________ a protective window