Stop screwing with his eye will be the simplest advice I can give you. The scotch tape "trick" is dangerous and NEVER should be done. His eye is most likely damaged from doing things exactly like that. Don't worry or even look at it until the next shed. Then look at the shed to see if it's complete with eye caps. If it is you'll know that its not an eye cap. Please leave that poor snakes eye alone. Seriously. Btw I am not trying to be harsh. It's just the truth.
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