@Macarto,
sorry to interrupt. Eyesight that gets worst with age, thats presbyopia you re talking about. i.e. Lao hua. I supposed most people get this, even i'm starting to get a little lao hua yan. As for short sightedness, it usually stabilizes in yr early teens. If your short sightedness increases as you grow older to beyond 500, beware! You might be going blind!
