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Doctor insights on: Optic Nerve Damage Blindness

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30% optic nerve damage with no vision loss. Late beginning stage to early moderate stage. Was glaucoma caught early enough to prevent vision loss?

30% optic nerve damage with no vision loss. Late beginning stage to early moderate stage. Was glaucoma caught early enough to prevent vision loss?

Most likely: Not knowing your visual field, oct/hrt results I would speculate that you should be able to look forward to a life of normal vision if adequate iop lowering is achieved. ...Read more

Dr. Olav Jaren
1,344 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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If 2 drs, say glaucoma was caught early but there is 30% optic nerve damage and some peripheral vision loss, how can they say it was caught early?

If 2 drs, say glaucoma was caught early but there is 30% optic nerve damage and some peripheral vision loss, how can they say it was caught early?

Glaucoma: Our optic nerves have a lot of redundancy built into them. It takes more than 50% loss of axons in the optic nerve for vision loss from glaucoma to become noticeable. ...Read more

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Diagnosed w/glaucoma. Opthomologist said no peripheral vision loss. No optic nerve damage but the nerve tissue has thinned. How serious is that?

Diagnosed w/glaucoma. Opthomologist said no peripheral vision loss. No optic nerve damage but the nerve tissue has thinned.  How serious is that?

Early changes: This means that there has been some early damage to the optic nerve/ retina. As long as the eye pressure is controlled over every exam you should not lose any vision. Visits to the eye doctor every 4 months is recommended. ...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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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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Doctor said 30% optic nerve damage & no peripheral vision lost. He said at 50% damage I would notice vision loss. Does this sound reasonable?

Doctor said 30% optic nerve damage & no peripheral vision lost. He said at 50% damage I would notice vision loss. Does this sound reasonable?

Yes : We can measure nerve damage that does not affect vision or visual field. In most cases of glaucoma, the disease is advanced before the patient notices anything. This lost vision is permanent. ...Read more

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30 percent optic nerve damage in one eye, other eye normal. 58 years old. Even with treatment, how long before I'm visually impaired or legally blind?

30 percent optic nerve damage in one eye, other eye normal. 58 years old. Even with treatment, how long before I'm visually impaired or legally blind?

Glaucoma?: I am guessing you have glaucoma. This can be treated with proper medication and laser or surgery if that fails. Seeing your ophthalmologist regularly gives you an excellent chance to preserve what vision remains. ...Read more

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My brother has damaged his optic nerve and is blind. Is there surgery for this?

My brother has damaged his optic nerve and is blind. Is there surgery for this?

Optic nerve: Nerve cells cannot regenerate (repair themselves). This means that any damage you have to one of your nerves is permanent (most likely).
However, research is targeting nerve injury and regeneration at the current time. ...Read more

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Are you legaly blind when you have optic nerve atrophy?

Not necessarily: Optic atrophy can occur from several etiologies that do not reduce the central vision to 20/200 or worse or severely constrict the visual field. Those are the criteria that need to be met to consider a person legally blind. ...Read more

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Optic nerve caused blindness how to fix it?

Probably not possibl: See your neuro-ophthalmologist for a discussion of this problem. Optic nerves that are seriously damaged cannot usually be treated. There is some relationship to cause here — for instance there are a number of cases of visual loss from thyroid disease which can recover quite a bit. ...Read more

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With treatment can a 58-year old with 30 percent optic nerve damage avoid significant vision loss in their lifetime?

With treatment can a 58-year old with 30 percent optic nerve damage avoid significant vision loss in their lifetime?

Depends on the cause: If your vision loss is from compression of the nerve from a tumor it is best to get it treated asap to prevent further loss. Optic nerve damage may not improve if the damage is severe. ...Read more

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Is tilted optic nerve causes blindness?

Is tilted optic nerve causes blindness?

Optic nerve: The only way to answer your question is for you to let me or others know what exactly your concern.
Has your eye doctor told you that you have a "tilted optic nerve"?
If so what were you told? ...Read more

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I have a crushed optic nerve that caused blindness and now my son of 8 years vision goes from dark to light what is this?

I have a crushed optic nerve that caused blindness and now my son of 8 years vision goes from dark to light what is this?

Sounds unrelated: The injury you sustained sounds traumatic. Your son is having different symptoms that are clearly no related to trauma. He should be able to cooperate with a good ophthalmology examination. His symptoms may be related to growing and maturing. He should protect his vision when out in the bright sun, and he should exercise his vision with good reading habits. ...Read more

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Diagnosed w/mild glaucoma 2 yrs. Ago. Pressure perfect but now much damage to optic nerve & I'll be blind in 5 yrs. Is it really glaucoma? What to do?

Diagnosed w/mild glaucoma 2 yrs. Ago. Pressure perfect but now much damage to optic nerve & I'll be blind in 5 yrs. Is it really glaucoma? What to do?

Disturbing news: Optic neuropathies, whether from glaucoma or other disease lead to loss of optic nerve function. Whenever the neuropathy behaves differently than expected, as in fast decline in function despite controlled IOP, other considerations must come to mind like Nocturnal hypotension, sleep apnea, diurnal IOP spikes. The nerve often has more pallor than cupping in ischemic/:compressive etiologies...(more ...Read more

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I have a blind spot (not the usual blind spot) due to high BP of the eye & low damage of the optic nerve, could it be treated by (medicine/surgery)?

I have a blind spot (not the usual blind spot) due to high BP of the eye & low damage of the optic nerve, could it be treated by (medicine/surgery)?

Need to see a Doc: It is difficult to identify a blind spot and distinguish it from the "usual bind spot". Needs to be evaluated with retina and optic nerve examination and find out if any treatment would help. ...Read more

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Recently diagnosed with glaucoma. No peripheral vision loss. 30% optic nerve damage. With treatment will nerve damage cause loss of vision?

Recently diagnosed with glaucoma. No peripheral vision loss. 30% optic nerve damage. With treatment will nerve damage cause loss of vision?

Probably not: Glaucoma is readily treated with anti-pressure medication which should prevent any further damage in almost all cases. This is handled by ophthalmologists (you are not seeing an optometrist I hope?) who deal with this daily. There is a step ladder of treatments -- medication, laser, surgery to prevent further damage which can be quite effective. ...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?

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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Age 58. 30 percent optic nerve damage in 1 eye due to open angle glaucoma. Withg treatment is it possible to prevent vision loss in lifetime?

Age 58. 30 percent optic nerve damage in 1 eye due to open angle glaucoma. Withg treatment is it possible to prevent vision loss in lifetime?

Yes: You will most likely be able to be controlled medically. Your chances of not losing vision from glaucoma are very good. Make sure you are compliant with your medication. ...Read more

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Baseline pressure is 28 & threshold is 19. No peripheral vision loss minimal optic nerve damage. Want to avoid eye drops. Can slt drop pressure to 19?

Possible: If you want to avoid drops, it is definitely worth trying slt first. Slt is a viable first line treatment for glaucoma. A 30% reduction in pressure is possible, which would bring your pressure down between 19 and 20. Even if you needed drops in addition to slt, you would require fewer drops to achieve your target pressure. ...Read more

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Optic nerve damage reversible?

Depends: On time, severity, etc. Specifically depends on if the neurons have died (not recoverable at this time since an extension of the central nervous system) or are just in "distress" and could recover when the inflammation or inciting factor is resolved. Typically, not reversible to normal. ...Read more

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Is optic nerve damage reversible?

Sometimes: Some optic nerve damage is reversible. For example, optic neuritis frequently recovers completely, when the cause is found and can be treated. Optic neuropathy due to vascular disease sometimes recovers. Traumatic injuries of the optic nerve may or may not recover. ...Read more

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What are the main causes of optic nerve damage.

What are the main causes of optic nerve damage.

see details: Multiple sclerosis is a common cause. Other causes include trauma, infection, emboli (blood clots), vascultis or infarctions. ...Read more

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Have 30 percent optic nerve damage due to open angle glaucoma. How many years would it take to incur this amount of damage?

Have 30 percent optic nerve damage due to open angle glaucoma. How many years would it take to incur this amount of damage?

Variable: Glaucoma tends to be a slowly progressing condition. Damage typically occurs over many months or years; however. It also depends on how high your eye pressures are. People with very high eye pressures may develop damage more quickly. It is very important to have regular follow up with you eye md to ensure your eye pressures are controlled adequately. ...Read more

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Optic nerve damage in the eye?

Optic nerve damage in the eye?

Optic nerves: A thorough exam can help determine the extent of the damage in many cases along with visual field and oct testing. A neuroophthalmic exam may be required in addition to an MRI or ct scan in some cases. ...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

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Field vision test normal. 30% optic nerve damage. Is glaucoma in early stage?

Yes: Need more information. Who and how did they claim or detect 30% optic nerve damage? If field is normal, that is a good sign(how did they test this or make that claim?). You need to see an ophthalmologist. ...Read more

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Can optic nerve damage be treated effectively if it isn't from glaucoma. Could be vascular?

Optic nerve: The vascular issue is a reflection of a systemic vascular process and will need to be addressed by your internist and eye doctor in consultation. ...Read more

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On average what percentage of optic nerve damage must there be in order to show a loss of peripheral vision on a field test?

Very sensitive : Formal visual field testing can pick up very small defects due to optic nerve damage. The test can be affectedy your ability to stay focused however. ...Read more

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One ophthalmologist said 30% optic nerve damage, one said he doesn't use percentages & another said it was lower. Why the different opinions?

Subjective exams: Examining the optic nerve requires the ophthalmologist to make a 'best guess' at the changes seen on examination. Because everyone has a unique appearance to their optic nerve, the assessment is rather subjective. Although there is imaging available (hrt, oct) none of these measures is precise. ...Read more

Dr. Sam Markzar
784 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