Why is it that i can read things clearly but peoples faces look foggy ?? is been like this for a month now , eye doctor can't find anything wrong

Face Blindness: Prosopagnosia is a neurological disorder characterized by the inability to recognize faces. The term prosopagnosia comes from the Greek words for “face” and “lack of knowledge.” Depending upon the degree of impairment, some people with prosopagnosia may only have difficulty recognizing a familiar face; others will be unable to discriminate between unknown faces. Do some searching for specialists!