Has anyone used restasis or xiidra and kept the effectiveness for many years?

[Guest]

I'm asking because I see so many that post saying xiidra and restasis were like a wonder drug and then 6-18 months later, boom, stopped working. Has anyone had extremely long term success on these drugs (over 2-3years)? Should they be cycled to remain effective?

My my biggest fear is regression...as I'm sure it is with most people here. Definite anxiety induced...so I'm curious what other people have experienced.