From the given prescription , how to find out the power at axis 180? using the Theta formula
Example : -4.50 -3.5 X 40
what is power at 90 axis ?
what is the answer ?
+2.00 +3.00 X 110
what is the power at axis 180 ? using the theta formula
-6.00 +2.00 X 85
what is the power at axis 180?
Please answer these for me as soon as possible
i have a test on this next week
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