| abstract |
The present invention relates to a medicament for preventing or treating an ocular disease comprising cyclo-trans-4-L-hydroxyprolyl-L-serine as an active ingredient, a medicament for preventing or treating dry eye comprising the compound as an active ingredient, and, in particular, a medicament for preventing or treating dry eye having an action of enhancing mucin secretion and an action of enhancing repair of ocular tissue damage caused by dry eye. |