What supplements/foods increase IOP?

I recently had my eye pressure measured after many many years.  Had measuremmts 3 months apart and got pressures ranging from 20 to 25.    I have scheduled  follow-up tests, but in the meantime I am trying to discover what I can do to lower IOP.    While I do believe that I am a good candidate for the 'white coat syndrome', I want to do something on my own to reduce IOP.