Doctor insights on:
Optic Nerve Damage Blindness
30% optic nerve damage with no vision loss. Late beginning stage to early moderate stage. Was glaucoma caught early enough to prevent vision loss?
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
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?
Diagnosed w/glaucoma. Opthomologist said no peripheral vision loss. No optic nerve damage but the nerve tissue has thinned. How serious is that?
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
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
Doctor said 30% optic nerve damage & no peripheral vision lost. He said at 50% damage I would notice vision loss. Does this sound reasonable?
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?
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
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
With treatment can a 58-year old with 30 percent optic nerve damage avoid significant vision loss in their lifetime?
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
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
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)?
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
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
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?
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
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
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
Can you tell from the eyes the window to the body about severe nerve damage anywhere in the body not just the optic nerve?
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
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
On average what percentage of optic nerve damage must there be in order to show a loss of peripheral vision on a field test?
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
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
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