I am disappointed with repeated ranting about not wearing glasses and then go on boasting about phone / monitor / tv resolution, HD and what not.
This is tech forum and grow up, if you are gaming / viewing HD content / looking at a good photo and asking my correction is not proper and i am comfortable without glasses you are fooling yourselves.
Now about science and answer proper :
Your eye sight depends upon length of your eyeball, the lens within eye (residing behind the dead centre black area0 and focussing muscles.
If your eye is longer than focal length of your lens you end up myopic (seeing clearly near object but difficulty with distant objects)
If your eye is shorter than focal length of your lens you end up hypermetropic (seeing near objects with difficulty while distant vision is good)
In addition to this there is an entity called "Astigmatism" which happens due to uneven surface of Cornea (Aka like moon
) in common terms its called cross numbers or cylindrical numbers. This is more difficult in a sense even though less in amount it may create more trouble for person.
There is no evidence like Shripad said, that not wearing glasses worsens you vision, but there is definite evidence that before you attain age of 7-8 years and have glasses and if you dont wear glasses you may loose your sharpness of vision drastically.
Wearing glasses regularly improves your sharpness, prevents fatigue, prevents dryness, improves or delayes age induced near vision glasses (You end up spending your focussing power on concentrating)
Now about social impact :
Imagine a scenario : a half sleepy young driver with defective vision hits your kin at dawn / dusk just because he received spark a micro seconds late and your kid ended up in hospital / crematorium. Whom will you curse, luck of your kin or arrogance of a blind youth. (I call blind because partial vision is blindness)
now a techie scenario : there are so many debates / showoffs about FPS, 1080P / Panels / GPUs here, if your vision is defective how can you judge the details in a picture / movie clearly even though you are sitting mere 1.5 feet away from monitor.
And the thats the reason armed forces / airlines dont recruit people with corrected vision.