Are eye drops good...?!
Question: Are eye drops good...?
... and give the quantity of tears that they need to keep moisturised?
Answers:
As long as you use them only when needed, you should be fine. I use them if I am sick, sometimes my eyes get dry. Or, seasonal changes. Don't use them everyday though. My mom did that, and now if she doesn't use them everyday, her eyes get super red and dry. So just use it only when often.
I usually use 1 drop per eye, or like I said, your eyes will become to "think" that they need them, and become dry easier. Hope this helps. :)