my husband was diagnosed as diabetic in December 2014. He's type 2 and at sugar levels of 120 and under. Managing it well. His vision has become blurry over the past week is getting a vision test and glasses because he is impatient. He is at perle vision who is now giving him readers and asking to come back on tueday for his bifocal lense glasses. Should be be talking to his primary physician or an opthomologist instead of a retail eye glass outlet?