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Doctor insights on: Glaucoma Optic Nerve Damage

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What should I know about glaucoma and optic nerve damage?

What should I know about glaucoma and optic nerve damage?

Glaucoma: Glaucoma is a condition where the optic nerve can not withstand the pressure within the eye. If it is determined that you have optic nerve damage and it is due to pressure, then you have glaucoma. You need to treat (or lower the pressure) to a point where no more damage occurs to prevent further damage and vision loss. ...Read more

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Dr. Olav Jaren
1,287 doctors shared insights

Nerve Damage (Definition)

A complete nerve transection will leave an area totally numb. The distribution of the numbers depends upon where the nerve was cut. A partial nerve injury may leave the area tingly or incompletely numb. Finally even if the nerve is not cut the swelling and bruising to the tea can affect the nerve as well. Usually we consider sharp penetrating injuries as likely having nerve lacerations when sensation is lost. A hand surgeon can examine the hand and pinpoint the site or extent of nerve injury and recommend ...Read more


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In glaucoma 20% optic nerve damage with minimal peripheral vision loss. How much loss would it take to not see coffee tables & steps?

In glaucoma 20% optic nerve damage with minimal peripheral vision loss. How much loss would it take to not see coffee tables & steps?

Depends: As a general rule, the eye has an amazing ability to see, even with severe nerve losss. Everyone has a natural blind spot in each eye (where the optic nerve exits the eye and goes the brain) and yet, even with one eye closed, it is hard to appreciate the blind spot. Typically, patients will have end-stage glaucoma before they start having glaucoma-related vision loss. ...Read more

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In glaucoma 20% optic nerve damage and minimal peripheral vision loss. Eye drop reduced pressure from 31 to 16. What is my prognosis?

In glaucoma 20% optic nerve damage and minimal peripheral vision loss. Eye drop reduced pressure from 31 to 16. What is my prognosis?

Favorable: You have early loss with probably no functional damage at this point. Glaucoma is successfully treated with regular follow-ups and diligent use of the treatment recommended. You can do well with reasonable effort on your part. And the advice of a good glaucoma ophthalmologist. ...Read more

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Open angle glaucoma 30 percent optic nerve damage. 58 years old. How many years before damage would be seen. Dr did not screen yearly w/annual exam.

Open angle glaucoma 30 percent optic nerve damage. 58 years old. How many years before damage would be seen. Dr did not screen yearly w/annual exam.

Best to take multipl: Field exams, and look at the severity of the defect and the rate of progression with treatment (plotted against the estimated number of years to live) and you can get an idea of how long before very advanced damage can lead to actual real life vision changes vs. Merely changes on a test that are not seen in real life. ...Read more

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Glaucoma with 30% optic nerve damage. No peripheral vision loss. For patient to notice peripheral vision loss, how much nerve damage must there be?

Glaucoma with 30% optic nerve damage. No peripheral vision loss.  For patient to notice peripheral vision loss, how much nerve damage must there be?

Variable: This depends upon the sensitivity of the nerves under the stress of the elevated pressure in the eye. Some will loss measurable amounts of vision at 30% damage, others require more loss to detect it. There is good adaptation so it takes a sensitive person to best detect loss. Best to get treatment and avoid any loss at all. ...Read more

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Have glaucoma w/30% optic nerve damage. Being treated with eye drop that has lowered pressure. Visual field.Test good. What is prognosis long term?

Good: Glaucoma is a treatable disease. If you are attentive to use the meds prescribed, have the pressure checked and periodic visual field your disease is well followed. If there is any tendency toward worsening there are other surgical option to address is. ...Read more

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Eye pressure taken yearly & dilation every other year. Diagnosed with glaucoma, high pressure, 30% optic nerve damage. Why wasn't damage seen earlier?

Sneak theif of sight: Glaucoma is known as the "sneak theif of sight" there are little to no symtoms of vision loss until it is very advanced. Yearly exams can detect glaucoma but the proper testing needs to be done to detect it early and prevent progression. Certain types of glaucoma can cause rapid damage and none may have exsisted at previous exams. We reccomend oct, optic nerve photos, visual fields and gonio. ...Read more

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In early glaucoma what would be considered minimal optic nerve damage?

In early glaucoma what would be considered minimal optic nerve damage?

No loss of function : Minimal optic nerve damage seen in early glaucoma is a structural change with or without visual field loss, depending on how the nerve is structurally changed. A visual field defect therefore isn't necessary to have in early glaucoma. Minimal nerve damage may show up as asymmetry, cup elongation, nerve fiber layer thinning, focal notching or excavation, vessel deformation, and other. ...Read more

Dr. Sam Markzar
758 doctors shared insights

Neuropraxia (Definition)

Neuropraxia is defined as a temporary loss of function of the nerve. Some nerves are purely sensory while others carry both sensory and motor fibers. Traumatic contusion injuries to nerves or nerve compressions can cause Neuropraxia. Sensory nerves like sural nerve in the leg or mixed sensory and motor nerves like the median and ulnar nerves in the forearm & hand ...Read more


Nerve (Definition)

The brain and spinal cord communicates with what is occurring in the internal organs and limbs by nerve fibers where are like electrical wires with insulation (myelin) and the "copper" (axon). Within brain and spinal cord these nerves connect to other nerves via synapses on both axons and dendrites. A nerve can carry information regarding sensations, and ...Read more