How To Choose Eyeglasses

Printable PD ruler

Single Vision Prescription（Learn about prescriptions）

If your prescription is like the following one, you need first to choose single vision type, and then fill in the correct information like the example below

Single Vision Prescription With Prism

If your single vision prescription is like the following one, you also need to fill in the prism information besides all other information like the example below. (Note: there is no PD value in the prescription, but you need to
fill in your PD value) How to measure your PD?

Progressive Prescription

If your prescription is like the following ones, you need to fill in information like the example below. (Note: there is no PD value in the prescription, but you need to fill in your PD value) How to measure your PD?
Sample 1, you just need to fill in the corresponding values.
Sample 2, you need to change +225 to +2.25, -150 to -1.50, -125 to -1.25, -50 to -0.50, and then fill in the corresponding values.
Sample 3, you need to use Near O.D. +0.75-Distance O.D.-1.50 or use Near O.S.+1.00- Distance O.S. -1.25 to get the ADD +2.25 value and then fill in the ADD blank.

Reading Prescription

If your prescription is like the following ones, you need to fill in information like the example below. (Note: there is no PD value in the prescription, but you need to fill in your PD value)

Other Information You Might Use When Filling In Prescription

OD stands for “oculus dexter,” or right eye.
OS stands for “oculus sinister,” or left eye.
If there is PL or DS in your prescription, it means the value should be 0.
The term PL (Plano) means there is no spherical correction in this eye.
DS stands for “diopter sphere”, which means there is no astigmatism correction for this eye.
You need to fill in information like the example below. (Note: there isn’t PD in the prescription, but you need fill in your PD measurement)