If IOPs are ideally less then 15 mmHg, then why aren medications usually started until the IOPs are in the mid 20s?
We usually start treating when the constellation of IOP and other risk factors (such as central corneal thickness, family history, race, low systemic blood pressure, etc.) make us think the chances of developing glaucoma are significant. If the cornea is thick, an IOP of 25 mmHg may really be around 21. If the nerve is quite healthy, it may be resistant to glaucoma damage at mid 20’s IOPs. One has to look at the whole picture when judging when to start therapy. Dr.
