An unclean, unkempt person living in a
small home or trailer with several generations of family which results in inbreeding and it's related birth and developmental defects.
A pinkeye keeps his or her house and
yard as unclean and unkempt as themselves. Trash, car parts, furniture and animals (often goats, chickens & ducks) fill a pinkeyes house and
yard.
Because their yards are the black-eye of any neighborhood, most pinkeye's live in
small clusters know as a "Pinkeye
Village" (the most well-known of which is located in East Taunton, MA.)
Pinkeye does is in fact relate to the medical term pinkeye as both flourish in close quarters where there is little to no hygiene.
The term pinkeye is used almost exclusively in South-Eastern Massachusetts.