Stages of Glaucoma

1. At Risk for Glaucoma
   1. positive family history
   2. carrier of glaucoma gene
   3. elevated intraocular pressure (about 21 mm Hg)
   4. narrow anterior chamber angle
   
   
2. Glaucoma Suspect
   1. suspicious optic disc
   2. suspicious visual field
   
   
3. Glaucoma Early
   1. definite optic nerve damage
   2. visual field loss (becomes present with progressive nerve damage)
   
   
4. Glaucomatous Disease (Moderate or Advanced Glaucoma)
   1. symptoms present
   2. loss of function due to loss of vision