It's an adaptation? Huh, never thought about it. I would go swimming in the sea when I was a kid without goggles, could see everything clearly. Nowadays it hurt

It's an adaptation? Huh, never thought about it. I would go swimming in the sea when I was a kid without goggles, could see everything clearly. Nowadays it hurts opening my eyes underwater, I assumed it was just polluted as hell (by all reports it is)...