IOP hits 24 again

For the second time this year my IOP hit 24.   I am 58 .  My mother went blind from glaucoma ( in the boston area no less ) in about 2002 at the age of 72.  She had been doing everything U Mass hospitals and associated doctors could come up with operations , stents, drugs  etc.   My younger brother lost significant vision in one eye at 43 ( about 2005).  I was hoping I had my dad's physiology but alas more evidence that I don't.  Although now at 90 my dad has macular degeneration ( wet ).  My results so far are no damage yet so technically it is not glaucoma.  Optomologists prescribes xalatan .005  i ask for cheaper and get Timolol Maleate.  Drag  myself to work and start to read about side effects.  Askapatient.com has info on Xalatan, a little on timolol.  I stumble onto this website and since I am a biomedical engineer by training and instrument and control engineer by default I find myself deeply interested in this selftonomotry.  E mail dave.  He fires back an email.  I don't feel so alone.  I had noticed that some activities like mountain biking do make my eyes feel better, not sure about sex  and other activities I need to find out what works for me. So now the search for the least expensive way to own a tonometer.  Will be contacting my insurance company to try an coorce them to pay something ( i assume they don't ).