It's easy to use your Flex Spending Account (FSA) or Health Savings Account (HSA) for your glasses.

As long as you were given a card with a Mastercard or Visa logo, you can use it at checkout. Just enter the details the same you would for a debit or credit card. You will get an itemized receipt for your order that your can submit to your provider to prove the purchase was for an 'health product.'