I thinking about changing ent .i highly allergic to st. augustine grass but he only test for johnson , timothy and bermuda grass i dont have those in my yard . i itch so bad from augustine grass now my eyes water. do ent test augustine grass? help?

Apparently you have figured out the diagnosis and don't need to test for it. If you know the terrain around you and can avoid Augustine grass, that would be idea. Meanwhile you can try OTC anti allergic medication like chlorpromazine (side effect is sleepiness). This can be highly effective. Otherwise you might see an allergist rather than an ENT doctor.