1800Contacts is offering a FREE Online Eye Exam ($40 value) while eye care providers are closed. This is a real vision exam and your results are reviewed by a board-certified ophthalmologist licensed in your state. Click here and answer a few questions to find out if you're eligible then use your smartphone or computer to take the eye test. If appropriate, they’ll issue you a valid prescription within 24 hours. You can use your prescription to buy contact lenses anywhere in the United States.