Well, yes, keratitis is contagious. As we know that keratitis is a partial breakdown of the surface of the cornea. And according to some experts, it can be infectious. In other words, you should know that keratitis is the general term for anything which causes the surface of the cornea to breakdown. Dryness, infection and congenital defects of the cornea may occur, because of it. Of course, it can just get it from someone else, for it is contagious. In some cases, keratitis is usually painful, causes eye redness, and disturbs the vision. So you should follow what your ophthalmologist has told you, and in common eye drops can be helpful.