Formulas Flashcards

0
Q

Power of a lens

A

P=f+b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

Focal length formula

A

D=1/f

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Patients actual rx?

A

Sphere power and what is read on lensometer for the cyl.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Prentice rule?

A

P=hxd/10

H= length in mm
D= diopter power
P= prism
How well did you know this?
1
Not at all
2
3
4
5
Perfectly