Lori, I refuse to have the 'puff' test. It is noted on my chart and they don't even try. If there is no history of glaucoma in your family, he is very low risk. There are other ways of testing now, too. I'd allow him the voice to say "no" to that one.
Also, I think you should avoid having him accompany you on doctor visits that cause you so much stress. If you had coping skills that allowed you to keep the anxiety under control, that would be useful for him to see that in action. Oh, I just looked up and see passthepotatoes has the same thoughts, I agree with what she says.
Btw, I'm not kicking you for having those phobias. My kids were adults before they knew how much I avoided the dentist. My daughter is now a dental assistant, so I think it's wise to hide some things from the kids. Honesty should be upheld, but full disclosure is not always appropriate.