Hi, just looking for advice please.

I have a patient complaining that as soon as he looks off centre in his polarised single vision sunglasses he experiences distortion so bad he cannot drive in them and has to take them off.

He has had single vision rimless specs in the same RX with the same OC’s which are fine.
Rx is +1.75DS in both eyes.

Any ideas what could be the cause of this?

Thanks