Eye Flashcards
(4 cards)
1
Q
How many colours
A
Did you know that your eyes can distinguish approximately 10 million different colors?
2
Q
Colour blindness
A
: Color blindness affects about 8% of men and 0.5% of women, and it has roots in evolutionary biology. Some hypothesize that it may have been advantageous for our ancestors to focus on detecting motion in the environment rather than colors.
3
Q
Lens
A
The human eye’s lens constantly changes shape thousands of times a day to keep objects in focus.
4
Q
Lacrimal gland
A
A single tear gland produces about 5 to 10 ounces of tears each day, even when you’re not crying!
