You'd be best going to a specialist rather than an chain optical shop. The big names tend to discount and aren't interested in anything beyond plain bread and butter work as their returns are limited and they just want quick and easy turnover.
When I was in Brisbane years ago, we had "Focus Optics" which was in the same building as the CASA approved eye examiner.
You could try calling some of the Designated Aviation Opthamologists on the CASA website who may be able to do the job themselves or point you in the right direction. At least they would know what an overhead panel is.