euphrasy
euphrasy (ū"frȧ*sy) , noun
[New Latin euphrasia, from Greek e'yfrasi`a delight, from e'yfrai`nein to delight; e'y^ well + frh`n heart, mind: compare Late Latin eufrasia, French eufraise.]
(Botany) The plant eyebright (Euphrasia officionalis), formerly regarded as beneficial in disorders of the eyes.
Then purged with euphrasy and rue
The visual nerve, for he had much to see.