Eye Opening Quiz What is the lifespan of the average eyelash?* 5 months 2 months 1 year 9 months What percentage of your brain’s function is spent on seeing?* 10% 20% 30% 50% How many time do you blink in a minute?* 5-10 times 10-15 times 15-20 times 25-30 times What is the most active muscle in your body?* Heart Eyes Tongue Gluteus Maximus What color can humans see the most shades of?* Blue Green Red Yellow What is the most common eye color? Blue Hazel Brown Green PhoneThis field is for validation purposes and should be left unchanged. Δ