Use your latest prescription from your optician. If you don't have a copy, ask the optician who did your eye test to give you one.
Important: If your prescription shows both subjective refraction and autorefraction values, use the values under subjective refraction, not autorefraction. Subjective refraction is the final prescription value measured by the optician.
We recommend taking a photo or screenshot of the whole prescription, so that all the details are visible: SPH, CYL, AXIS (sometimes written AX) and ADD (if you're ordering progressive lenses).
Please note: Many prescriptions don't include your PD (pupillary distance). In that case you need to measure it yourself, ask your optician for it, or check the card that came with your previous glasses. Instructions for measuring your PD: banaanieyewear.com/pages/silmateravalimitta