What does sphere mean on my prescription?
Sphere refers to the power of your lens (measured in dioptre units) to correct the degree of short or long sight you have.
Commonly, this number will be different for each eye.
The figures will have a plus sign if you're longsighted and a minus sign if you're short-sighted.
More help in store
If you need more help, you can contact us by searching for your nearest store below. Just type in your postcode, city or town.