Calgary's Dr. Dianna Leong explains that during the short, winter days, we should spend an hour or two outside each day. There are potential causes of myopia. The first one is genetics. If both parents have myopia, the children may have 30-40% chances of getting myopia. If there is only one parent has myopia, the chances lowers to 20-25%. The second one is computer or smart phone use which will cause eye strain or myopia. the third one is that if our eyes go longer than it should, they may suffer from eye fatigue as well, which may lead to short eyesight and burry. Spend two hours in the sun each day can help cure myopia. Since there is no easy way to cure myopia, we should avoid possible causes of myopia and keep a healthy balanced activity in every day. Hope this helped!