What is non glaucomatous optic neuropathy?
What is non glaucomatous optic neuropathy?
Non-glaucomatous optic neuropathy (NGON) was defined as clinical evidence of impaired optic nerve function in the absence of field or disc changes of glaucoma.
What are the signs and symptoms of optic neuropathy?
Symptoms
- Pain. Most people who develop optic neuritis have eye pain that’s worsened by eye movement.
- Vision loss in one eye. Most people have at least some temporary reduction in vision, but the extent of loss varies.
- Visual field loss.
- Loss of color vision.
- Flashing lights.
How is optic neuropathy treated?
Optic neuritis usually improves on its own. In some cases, steroid medications are used to reduce inflammation in the optic nerve. Possible side effects from steroid treatment include weight gain, mood changes, facial flushing, stomach upset and insomnia. Steroid treatment is usually given by vein (intravenously).
What is the present pathogenetic concept of glaucomatous optic neuropathy?
Glaucomatous optic neuropathy implies loss of neural tissue, activation of glial cells, tissue remodeling, and change of blood flow. The blood flow reduction is not only secondary but has a primary component. Activation of astrocytes leads to an altered microenvironment.
Will I go blind if I have glaucoma?
Fortunately for most patients the answer is no. Blindness does occur from glaucoma but it is a relatively rare occurrence. There are around 120,000 cases of blindness in the United States and 2.3 million cases of glaucoma. This represents about 5% of glaucoma patients.
What is ischemic optic neuropathy?
Anterior ischemic optic neuropathy (AION) is a sudden loss of vision due to an interruption of blood flow to the front (anterior) of the optic nerve, also known as the optic nerve head. The optic nerve’s job is to carry visual information from the eye to the brain, which assembles this information into images.
Does low eye pressure affect vision?
Low pressure. For some people, very low pressure can bring on blurry vision or other problems. Others can see just fine with it. When the pressure is below 5 mm HG, doctors call it ocular hypotony.
