The other problem is I'm almost out of contacts, and she potentially could withhold the prescription if I don't do the glaucoma test. OTOH they have one of those ... big-ass retina scanning units. It looks like the HAL9000 and takes an incredibly clear picture of your eye. From what I was reading it's also a good glaucoma check, but that may be a more experimental use at the moment. Happily the lady who gives the puff of air test is very patient with me.