Myopia: When and how does it manifest itself?

Why do you even need sports sunglasses? What types of lenses are there and is the colour of the lenses connected to the sport?
You can't read a message on your mobile phone, you can't tell if it's 3 or 8 when you look at the clock, you can't see who the person is who is waving at you from the other side of the street,... Does this sound familiar? What are the signs that you need prescription glasses and what will they change in your life?
It’s that time of year again when we celebrate World Sight Day around the globe! Join us and discover some interesting facts about world population’s sight.