yes -- a cherry eye will look like a bubble of pink, bulgy skin , in the corner of the eye .it is likely an irritant to some current pollen. now and spring is bad, and this years especially.
i have not used human saline drops because they usually have something other than saline in them. use refresh, genteal. one of those. if they have an eye scratch, or object in the eye. it has almost for sure covered over by now. the eye heals over in 24 hrs . it will need the vet to look at !!!! but in teh mean time the drops I have suggested will help lubricate the eye . and protect it. good luck.
your dog also may have a mild case if disticia.(I think that is what it is called, where the eye lashes curl under, and causes , scratching of the eye.) in which case , the best bet , and lasting treatment is a slight cut above or below, depending on the lid effected. and a tuck in the skin to pull the eye open more. it is cheap, easy and usually very successful.