I wrote earlier about the problem I have distinguishing between shampoo and conditioner while in the shower without my glasses.
There’s another problem like this: lens cleaner fluid. I need to take off my glasses to spray lens cleaner fluid on them. If I don’t orient the lens cleaner fluid bottle properly, I will spray lens clean fluid into my eyes rather than onto my glasses. However without my glasses on it’s difficult to tell which way the spout is pointing.
There must be a simple solution to this. It makes me wonder, though, if the people who make lens cleaner fluid bottles ever try and clean their glasses.