Wash. Rev. Code § 18.64.530
A pharmacist is authorized, without consulting a physician or obtaining a new prescription or refill from a physician, to provide for one early refill of a prescription for topical ophthalmic products if all of the following criteria are met:
(1) The refill is requested by a patient at or after seventy percent of the predicted days of use of:
[ 2015 c 85 s 1.]