Sam Worthington is convinced his bad eyesight helped cement his place as a Hollywood hard man - because he always looks angry when he squints to see.

The Avatar star is short-sighted and admits he always looks stroppy when he concentrates. He says, "I'm blind. I can't see. I'm short-sighted and I don't get distracted by anything on set. So it's just basically me and the other person. People think that when I squint that I'm angry all the time. It's just that I can't f**king see." (KD&LR/GUN/ZN)

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