I'd say get a second opinion from another eye doctor... can't really diagnose ya easily over the Internet, heh.
Maybe even DEMAND a new pair of glasses, there's always the chance someone along the line (i.e. doctor, lens crafter, cashier, etc) screwed up and gave you the wrong Rx on the glasses, since the sunglasses are doin' ya fine.
Whatever the case, if you're not adjusting easily to the glasses, something IS NOT RIGHT.
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