a: tears ~
b: a polish
What:
"First, it is important to know that our tears are crucial for good vision. The first thing light hits when it reaches your eye is the tear film on the surface of your cornea. The cornea is like the front window to the eye and the tears are like a polish on that window"
Useful?
Writer: Dr. Matheson Harris
LCC:
Where:
Date: Sep 15 2016 4:04 PM
# 10257 Critique Analogy