Upaccati (?) in phrase "akkhīni upacciŋsu" at J vi.187 is probably faulty for apaciyiŋsu aor. of apaciyyati, Pass. of apacināti (cp. upaciyyati > upacināti) "the eyes failed", lost power, went bad; cp. apacaya falling off, diminution. If not this reading we should suggest upacchijjiŋsu from upacchindati "were destroyed", which however is not quite the sense wanted.

Pali-English Dictionary, TW Rhys Davids, William Stede,