When patients go to the eye doc complaining of dry, itchy eyes, they’re usually given some lubricating eye drops and perhaps a low-dose steroid to help with inflammation. Sometimes that’s enough to manage the discomfort. Sometimes it’s not, and docs will move on to prescribing drugs like Allergan’s Restasis or Shire’s Xiidra. But these drugs don’t provide fast relief. Sometimes they can take weeks, even months in Restasis’ case, to provide a therapeutic effect.