Australian private health funds will pay benefits for prescription glasses and/or contact lenses purchased from the vast majority of registered optical dispensers and eyewear stores across the country. If you're ever in doubt about whether a particular purchase will be covered, check with your health fund for confirmation.
However, if you prefer to do your shopping online, be warned that not all online optical retailers will be covered by your fund. With this in mind, check to see whether your health fund provides a list of online optical stores where you can buy the products you need and still access a full or partial refund.