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Hi, I'm a licensed veterinarian and I'll be happy to help you. FLurbiprofen is a non-steroidal anti inflammatory drug, or "NSAID". The "Dex" in NeoPolyDex is a steroid type anti inflammatory. In general, non-steroidals and steroids are not recommended for use together, as this may increase the risk of side effects. However, this is generally more of an issue when used "systemically" - via pills or injections, and I would not anticipate topical use in the eye to create a similar risk.
As long as the medicines seem to be helping, I don't see a problem in continuing, but I would definitely recommend a re-evaluation by the ophthalmologist as soon as possible.
If the pressure is elevated, then an anti glaucoma drug is needed, such as Dorzolamide, Latanoprost, or others... If high pressure has been confirmed in the eye, then one of those drugs or equivalent needs to be started right away.