Now I'm really confused!
From my extensive background in opthalmology (several hours surfing!) I've picked up the following definition of strabismus: "Strabismus is synonymous with heterotropia and squint" from Indiana University. Now, the optometrists report specifically stated that there was no tropia but that there was phoria, so if the above definition is correct (and I'm applying it right) then it can't be strabismus... ???
Thanks for the input, I'll probably have a chat with the CAA or the AME and see what they say (copies of the regs tucked under my arm!).