Researchers warn patients to stock up on essential medications, so if you are quarantined or if stocks are scarce during an epidemic, you'll have enough to get through.
Yet all of this might not be necessary. Unless your policy requires you to obtain more than 1 month of critical eye treatment, such as drops in glaucoma, then you will. In times of natural disaster some insurers will approve a 3-month supply of drugs.
When you have difficulty obtaining permission from your insurance provider, ask your pharmacist or ophthalmologist for help. And as usual ask for a refill as soon as you are due.
Don't wait to contact your pharmacy until last minute.