I can tell by the time the "future" comes more than 50% of the population of the world which uses technology for entertainment video games ect. Would have to wear glasses because either the eyes Lens has gone concave or convex... And I believe that there is no true cure on healing the eyes when it has lost it's sight... And for some of u have alrdy lost 20/20 vision but u just won't admit it... Ur eyes r really precious.. So take care of it before it becomes permanently sightless... Btw if u wear contacts.. Ur contacts r easily spotted coz it reflects some light