You asked today in the Quick Question thread if there is any way to help with popeye without medicines. Yes, buy epsom salt (found nearly anywhere that sells medicines), unscented.
Pre-dissolve 2tsp/gallon for 3-4 days, then use 3tsp/gallon for about 7-9 more. Epsom salt is a laxative as well as a way that reduces pressure, which helps get rid of the fluid building up behind the eye. Do 100% daily water changes and re-dose the salt.
You're a go!