That's not a coincidence, it's a stereotype. That's one tournament, where nearly everyone wore glasses, yet you're saying almost all chess players in the world wear glasses!
So Many Chess Players Use Glasses!

That's not a coincidence, it's a stereotype. That's one tournament, where nearly everyone wore glasses, yet you're saying almost all chess players in the world wear glasses!
The funny part of this comment is that I never said that almost all chess players around the world wear glasses

in my 35 tournaments which i have been participating I have seen only 7 players using glasses (!!) so I think that most of the players don't use them

That's not a coincidence. Chess causes damage to the view. I read it somewhere but i don't remember where.
So I went on a chess tournament here in Iceland a few years ago with my uncle and I noticed that everyone on the place (Like 15 guys) except one used glasses!! Dear chess players around the world, is that a coincidence?!