Estimate your dioptre

Since age is the main factor in the onset of presbyopia, having difficulty seeing things close up, use this timeline as a starting point to determining the correct lens power in your reading glasses.

30-40 years old start with


45 years old


50 years old


60 years old

+2.30 - +3.00

 We recommend that you go to an optician if you really are not sure of the strength/power you require. However in order to help discover what strength reading glasses are suitable for you, download and print out onto paper our A4 eye chart which is in PDF format.

The eye chart must be printed in order to ensure correct results as on-screen sizes vary between computers.

To find the strength you need, view the chart WITHOUT GLASSES from a distance of approximately 14 inches/35cms.