Oh no! We're truly sorry to hear about this and apologize for the late reply. If the prescription is correct, one more piece of information you want to verify is the PD (Pupillary Distance), as it is not always showing on the prescription. If it is not, and the PD is showing 63mm (or 31.5/31.5) on our receipt, this means the PD by default may have been entered when placing the order.
This measurement is important as it allows us to cut and place the lenses in the frame in order for your eyes to focus right at the middle of the lens, to ensure comfortable and perfect vision.
If the PD was incorrect, or if you're experiencing eye strain despite a correct PD, please contact our customer service team at 1-866-414-2326, or via chat or email through our website with your order information. We'd love the chance for them to trouble-shoot the issue and help with any adjustment if necessary. - SH