I currently have 3 pairs. One of them is for sun, therefore they are called sun-glasses and I use them while driving when the sun is too bright.(go figure :P )
The other two are normal eye-glasses. Different lens and different supports.
Here is the thing, pair no. 1 is used in home, at tv, computer etc. Pair no. 2 is used whenever I leave the house. And I noticed that it really matters what type of lens they have.
For example, at first, i used pair no. 2 in house too. And at the end of the day, my eyes sore and were red. Mostly because of the time I spent in front of different screens. After a couple of weeks I switched to the normal...regime. And after that I had no problem what-so-ever. The reason is that pair no. 1 has its' lens treated with anti-reflex (or something like that). And I could really tell and...see the difference. I thought that the person selling the glasses was just trying to earn some more money (because these lenses are more expensive that normal ones) but it seems I was wrong and I'm happy. My eyes are better protected with pair no. 1.
In conclusion, it is important to get the right lens for your eyeglasses (or is it "eye-glasses"?)
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