The Format Of Specitical Px Flashcards
1
Q
First number is the
A
Sphere, which denotes the power of lens
2
Q
The second number is
A
Cylinder, used to correct astigmatism
3
Q
The third number is the
A
Axis
4
Q
What does “ADD” mean?
A
The “reading” portion of the lens is called the ADD
