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How do I read a glasses prescription?

A prescription is made up of a number of parts. Sph or sphere is usually the first number and will either have a plus (+) or a minus sign (-). On prescriptions for people with an astigmatism there will also be a cyl or cylinder component. This is usually a number with a minus sign (-) and an axis (number 0 to 180 with an "x" preceding it). For people who require a reading prescription, there may also be an 'add' which is usually a number with a plus sign between +0.75 to +3.00.
University Vision
Leeds
LS1 1UH
 
0113 245 5618
 
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