M9 Flashcards
1
Q
What is Murpheys law
A
If something can go wrong, sooner or later it will go wrong
2
Q
What is the cornea
A
The clear window at the front of the eye that allows light to enter
3
Q
What is the cornea responsible for
A
70-80% of the total focusing ability also known as refraction of the eye
4
Q
What is the coloured part of the eye
A
Iris
5
Q
What is the purpose of the iris
A
How much light can enter the eye
6
Q
How does the iris control how much light enters the eye
A
By varying the size of the pupil
7
Q
By what factor can light be adjusted in the eye
A
5:1
