W. Va. Code § 33-16-3y: Eye drop prescription refills.

An insurance policy issued by an insurer pursuant to this article for prescription topical eye medication may not deny coverage for the refilling of a prescription for topical eye medication when:

(1) The medication is to treat a chronic condition of the eye;

(2) The refill is requested by the insured prior to the last day of the prescribed dosage period and after at least 70% of the predicted days of use; and

(3) A person licensed under chapter thirty and authorized to prescribe topical eye medication indicates on the original prescription that refills are permitted and that the early refills requested by the insured do not exceed the total number of refills prescribed.