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Meaning of axis on a prescription

Question

What does axis mean on my prescription?

Answer Video and written answer:
Qualified optometrist Dr Nigel Best DOptom MCOptom FBCLA FAAO answers this question:

Axis is part of your prescription, and tells an optician in which direction they must position any cylindrical power in your lenses (required for astigmatism). The number shows the orientation or angle (in degrees) from 1 to 180. The number 90 means vertical position, and180 horizontal. A higher number for the axis does not mean that your prescription is stronger it simply describes the position of the astigmatism.

For more information about your prescription, see our video below:

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Optician's Biography

Dr Nigel Best DOptom MCOptom FBCLA FAAO has worked as an optometrist for Specsavers for 17 years, both in his own practice and with the Professional Training department. He has a particular interest in dry eye and contact lenses and has had a number of academic papers published.
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