most eye drops will actually eat away your contacts. not a good thing, i remember last time i smoked, i had my contacts in and when i pulled them out, they just felt sticky and gross. but when i was usuing visin all the time after smoking, i actually had a yellow spot on my eye where i always dropped it in... thats when i stopped unless if my eyes get to dry. just get the eye drops for contacts, they work better then anything else i think.