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What does axis mean on my prescription? Answer: The axis number on your prescription tells your optician in which direction they must position any cylindrical power in your lenses (required for people with astigmatism). This number shows the orientation or angle in degrees from 1 to 180. The number 90 means vertical position and 180 horizontal. A higher number for the axis does not mean that your prescription is stronger - it simply describes the position of the astigmatism. Prescription Was this answer helpful?
How to Read Eyeglasses Prescriptions. When you look at a standard prescription, the first word you'll see is Distance.. This term refers to what power of lens you will need to see distant objects clearly. Your ophthalmologist or optometrist determines this power by trying different lenses while you read an eye chart in the exam.