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Reading prescription
How to find the spherical equivalent( including cylinder) in terms of -D power if I have both spherical and cylindrical? If the prescription is as below:
Left eye sph -4.5 Cyl -3.5 axis 10
Right eye sph -4 cyl -3 axis 180
What is the spherical equivalent? Should I add both spherical and cylindrical power together? What is the formula?
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Hello
Spherical equivalent: spherical power+ cylindrical power/2
In above case: right eye: 4+3/2= 5.5
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Disclaimer : The content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding your medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.