Oh, conjunctivitis, it's sooo contagious it went right around our family and back to DH for a second bout! It is worth the inconvenience of finding a late chemist to get the course started.
Antibiotic eyedrops, you have to ask the pharmacist for them. You can also get a little tube of antibiotic gel which DH thought was better. Be absolutely fastitdious about cleanliness, I now know to my cost.