Glaucoma is an optic nerve disorder which has two basic types. 90% of all cases are open-angle glaucoma which is associated with old age. As you grow older the eye becomes less effective at draining excess fluid, this causes pressure to increase gradually which slowly damages the optic nerve and impairs the field of vision. In rarer cases, narrow-angle glaucoma the eye drainage becomes blocked suddenly and the pressure rises rapidly to dangerous levels and when this occurs the subject requires immediate treatment to prevent blindness.
Signs and Symptoms
Open-angle glaucoma: Poor peripheral vision.
Narrow angle glaucoma: Headache, blurred vision at night, coloured haloes around light, severe eye pain, nausea and vomiting.
Glaucoma medications and/or surgery