Because it is the eye, I would definately take the puppy to the vet, he will look at it and put a special strip of paper on its eyeball which will turn green, he is able to see abrasions and cuts more accurately then, he will give you drops or an eye ointment to put into his eyes 3 times daily for inflamation.
Dont put anything in it yourself, nothing for humans, you can do more damage than good.

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