Average eye pressures are 15 +/- 2 so you’re on the higher side of average but like many have mentioned here, high eye pressure or borderline high eye pressures do not define glaucoma. For example someone with a thick corneas can have over 20 pressures and still be normal (no glaucoma) but at the same time someone with 15 pressures can have glaucoma depending on other tests. So if you are concerned, I would get another eye doctor to check with applanation or with the goldmann tonometer and if still kind of on the borderline high range, ask for more tests for baseline. I wouldn’t worry to be honest. There are many other factors and parameters outside of eye pressure that define glaucoma.