problems thinking and blurry vision from weed

i ve smoked weed every day since i was about 19, im 30 now. i started getting blurry vision and problems thinking about a year ago and also my anxiety has gotten much worse. i think i was using so much weed in a attempt to fend of my anxiety in the first place. i have been weed free for about a month now and i still have problems thinking clearly and the blurry vision remains. so far the only positive out of stopping smoking has been that my feelings and emotions seem to be stronger. im wondering if it is normal to have these side effects a month after quitting