Self-enucleation or oedipism (the act of destroying one or both eyes) has been described in psychotic patients [8], most frequently in schizophrenics [9]. Feldman and Feldman [10] reported that, after performing self-enucleation, patients were often found with a copy of Matthew's Gospel open at 5:29 where it is states "...if the right eye offend thee, pluck it out and cast it from thee; for it is profitable for thee that one of thy members should perish and not that thy whole body should cast into hell". Apparently, the enucleation enacts a literal interpretation of the text.
Apparently.
Whoa. Nobody with their copy of Œdipus the King clutched close?
perhaps that book shows up at scenes of a different kind of crime ?