Hello and welcome to FF Laura! First thing is to revise there are no sharp decor items in it's enclosure that could injure frog again in the future. If you find any, either un-sharpen it (i.e. wood) or take it out (i.e plastic items like plants).

You can use a bit of antibiotic carefully applied with a Q-tip. A tiny bit won't travel up and damage the eyes. Plain (no analgesic) Neosporin or Silver based antibiotic will work fine to help prevent an infection. Good luck !