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Krypton is used in different forms for many applications in the medical industry. Krypton lasers are commonly employed for laser eye surgery. The laser is used to help prevent blood clotting in the eye as surgery is performed.
Blue Kryptonite: Blue Kryptonite can affect Bizarro in the same way the green variety of kryptonite affects Kryptonians; blue kryptonite is the antidote to the random and bizarre effects of red kryptonite. Generally it is harmless to real Kryptonians.