Upaccati (?) in phrase "akkhīni upacciṃsu" at Ja VI 187 is probably faulty for apaciyiṃsu preterit of apaciyyati, passive of apacināti (cf. upaciyyati > upacināti) "the eyes failed", lost power, went bad; cf. apacaya falling off, diminution. If not this reading we should suggest upacchijjiṃsu from upacchindati "were destroyed", which however is not quite the sense wanted.