To find the reading glasses strength you need use this simple eyechart

We recommend that you print this chart on standard A4 paper and then adjust the position of the chart so that it is approximately 14 inches from your eyes. Click Here to View Printable Chart

To find the strength you need read the chart WITHOUT GLASSES.

Place this chart approximately 14 inches from your face.

Find the line with the print you can read clearly and use that strength.

IF YOU WEAR SPECTACLES PLEASE REMOVE THEM FOR THE TEST.

If this line is clear to read you need reading glasses 1.00

If this line is clear to read you need reading glasses 1.50

If this line is clear to read you need reading glasses 2.00

If this line is clear to read you need reading glasses 2.50

If this line is clear to read you need reading glasses 3.00

This one you need reading glasses 3.50