3.1.1 Uses instruments to measure corneal curvature and assess its regularity. Flashcards
1
Q
What are the readings off keratometry?
A
K1 - flattest merdian
K2 - steepest median
2
Q
How do you calculate corneal cyl?
A
You subtract K1 from K2. this is the about of corneal astigmatism
3
Q
why is knowing this important?
A
fitting cls and refractive surrgery
4
Q
How do you focus a keratometer?
A
5
Q
Calcualting astig…
A
higher = flatter
lower = sterrp
0.05mm = 0.25D
8.1 and 8.3 –> 0.2mm diff – 1d of astig
6
Q
A
