Why does Geralt’s eyes turn black?

Why does Geralt’s eyes turn black?

The Witcher: How Geralt’s Eyes Turn Black This is because Geralt was under the effects of a potion, which are very common in the universe of The Witcher. Geralt has access to a number of potions and elixirs, which enhance different senses and abilities depending on what he needs. Apr 18, 2020

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