1) how many muscles are attached to the back of the eye? a) 6 b) 4 c) 8 2) how many colours can eye see@ a) million b) none c) 350 d) 10 3) what percent do people have green eyes? a) 2% b) 8% 4) Roughly how much people are blind? a) 39 million b) 200 5) how many main types of colour blind a) 3 b) 5 6) roughly how many times does the eye blink every minute? a) 20-25 b) 15-20 7) how long does the eye take to heal? a) 48 hours b) 20 c) 15 d) 2 days

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