What does cylinder mean on my prescription?
Video and written answer:
Qualified optometrist Dr Nigel Best DOptom MCOptom FBCLA FAAO answers this question:
If you are astigmatic, your prescription will include a figure for the amount of cylindrical power which your lenses require. The number describes the difference in dioptres between your cornea's steepest and shallowest curves.
For more information about your prescription, see our video below: