An auxiliary device for use with a head-mounted display (HMD) is disclosed. The auxiliary device includes a base plate configured to be detachably affixed to an interior surface of a front-facing panel of an HMD; a pair of nose pad arms extending from a first side of the base plate, each nose pad arm having a proximal end connected to the base plate and a distal end carrying a nose pad; and a lens holder frame extending from the first side of the base plate, the lens holder frame being configured to hold a first prescription lens and a second prescription lens in general alignment with a first display and a second display, respectively, of the HMD.