long term effects of restasis

[nan]

are there any documented negative side effects from restatsis use? i have been using it for 15 months, but am thinking that maybe i should think about stopping it if there are downside risks. my symptoms have recently improved, but i don't know if it really has anything to do with restasis or not.

i don't know how many years restasis has been on the market, or how long the clinical trials ran. it could be that noone knows long term effects i suppose. how long is too long to use restasis on a daily basis, any thoughts?