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Doctor insights on: Binasal Visual Field Defect

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What nonprocessive conditions lead to a visual field defect?

What nonprocessive conditions lead to a visual field defect?

Many: There are many conditions that cause visual field defects. ...Read more

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Are visual field defects always justification for bleph?

Are visual field defects always justification for bleph?

No: Many insurance companies are not covering for only loss of visual field. (medicare requires loss of levator muscle (true ptosis) or not pay. There are many degrees of vf loss, some will cover upper lid surgery when vf loss is >30% measured by vf analysis. Insurance co are following medicare lead and are denying except for muscle functional loss. ...Read more

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Can anyone tell me more about having visual field defects?

Can anyone tell me more about having visual field defects?

Visual Field Loss: Hooding of the upper lid (mostly upper outer areas) are caused by elasticity loss and drooping. Forehead sagging and the lid elasticity loss are common causes. Visual field analysis is done in eye doctor offices, using an enclosure with many small lights and patient acknowledges seeking them light up in a closed background. This determines % of vf loss. ...Read more

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What is the definition or description of: Visual field defects?

Visual field loss: Certain conditions, i.e. glaucoma, cause loss of retinal sensitivity to portions of the peripheral vision. Macular disease affects central focusing vision. Visual field defects are usually monitored with an automated machine that measures a person's ability to see tiny spots of light in the peripheral and central vision. What we measure when a person reads a vision chart is central vision. ...Read more

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Ideas? What nonprocessive conditions cause a visual field defect?

CNS problems: Many strokes will cause a visual field defect which is stable and non-progressive although the initial loss can be devastating. Trauma to the optic nerve or the visual pathways can also do this. Most other lesions that register as a field defect are commonly progressive unless treatment is given. ...Read more

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Are visual field defects present in glaucoma?

Are visual field defects present in glaucoma?

Yes: By definition, glaucoma is a group of diseases which causes characteristic optic nerve damage with corresponding visual field defects. These defects are not always symptomatic to the patient and may only be detectable through special testing. ...Read more

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Can you tell me: are visual field defects always present in glaucoma?

Can you tell me: are visual field defects always present in glaucoma?

Frequently: Changes in the field of vision are one of the hallmarks of the diagnosis of glaucoma. The aim of treatment is to prevent this from happening and also to prevent it when present from progressing. Some cases are detected early when other changes hint strongly that glaucoma could be a problem, and so field defects might not have occurred yet in such cases. ...Read more

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Is there any related color vision problem associated with visual field defects?

Is there any related color vision problem associated with visual field defects?

Not directly: Some may have significant field defects with enough loss to compromise the color receptive portions of the retina. An example is retinitis pigmentosa, an inherited degeneration of the retina causing construction of the field of vision and loss of color vision. Ordinary color vision deficits are genetically determined and do not occur with field defects. ...Read more

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Are visual field defects always present in glaucoma patients?

Are visual field defects always present in glaucoma patients?

No: The defects occur after the increase pressure in your eye causes permanent damage to your vision. Usually you lose the peripheral vision. When it is bad you feel like looking through a tunnel when your peripheral vision is gone. ...Read more

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Are visual field defects always present in patients with glaucoma?

Good question!: Glaucoma is a progressive optic neuropathy. What that means, is that it continues to get worse and cause more loss of vision. The visual field defects, once present, only continue to get worse. That is why the treatment is so important for holding on what you have. ...Read more

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Am I supposed to see a special consultant opthalmologist for visual field defects?

Optimitrist & Eye MD: Usually after a 20-30% reduction, difficulty with eye fatigue and loss of effective night vision is noted. Believed that excessive hooding to that level forces drivers to lift their head when driving at night, resulting in excessive glare and loss of "gray" colors needed for depth perception. Use of visual field analysis in most eye doctor offices can measure the degree of loss. ...Read more

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Is it true that the bigger the visual field defect, the worser the brain has been damaged?

Depends: If the area of the brain damaged is the occipital lobe or the optic radiations, then visual field defects can occur. Generally damage at its maximum occurs immediately and over time there can be a lessening if the areas recover. Of course, the larger the initial damage, the more changes will be detected. Your neurologist can help sort this out. ...Read more

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Is it true that the more your brain is damaged the larger your visual field defect will be?

Depends: If the area of the brain damaged is the occipital lobe or the optic radiations, then visual field defects can occur. Generally damage at its maximum occurs immediately and over time there can be a lessening if the areas recover. Of course, the larger the initial damage, the more changes will be detected. Your neurologist can help sort this out. ...Read more

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Is it true that the bigger the visual field defect, the worse the brain is actually damaged?

Is it true that the bigger the visual field defect, the worse the brain is actually damaged?

Depends: Visual field defects can come from brain damage but most commonly from damage to the retina and optic nerve. If the visual nerves in the brain are disturbed by stroke, or vascular changes, tumors or some congenital anomalies, there can be field defects. But the defect depends upon the size of the optic nerves impacted. So a large lesion might have minimal visual disturbance in some cases. ...Read more

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Can medical conditions in the brain, excluding strokes or tumors, cause a visual field defect?

Can medical conditions in the brain, excluding strokes or tumors, cause a visual field defect?

Yes: Other causes include multiple sclerosis, infection (e.g., abscess), and tumors in the pituitary gland that press on the brain. Visual field defects can also be seen with diseases of the retina or optic nerves. Also late in the course of some neurodegenerative disorders such as alzheimer's disease higher centers for vision can be affected and visual deficits can be seen. ...Read more

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How big of a visual field defect would be an eye problem while driving?

How big of a visual field defect would be an eye problem while driving?

20-30% reduction: Usually after a 20-30% reduction, difficulty with eye fatigue and loss of effective night vision is noted. Believed that excessive hooding to that level forces drivers to lift their head when driving at night, resulting in excessive glare and loss of "gray" colors needed for depth perception. Use of visual field analysis in most eye doctor offices can measure the degree of loss. ...Read more

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I was wondering are black dots appearing in the visual field normal?

Not in my experience: You should see your doctor to evaluate. "mobile" black dots could be vitreous floaters, "stationary" dots are possible retinal or neuro issue. You do need an exam to evaluate. ...Read more

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I have visual trails (bursts of light that cross my visual field). Never happened before, please help?

I have visual trails (bursts of light that cross my visual field). Never happened before, please help?

Vitreous or migraine: The clear gel that fills eyeball is normally attached to the inside of the eye. As we get older it can become more liquid (watery) and detaches from the back of the retina causing flashes as it pulls on the retina. This is made worse when reading, looking side to side, basically with eye movement. Scintillations (flashes) occur with atypical migraine- with or without headache. ...Read more

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What are these colorful spots in the visual field?

Entoptic: Entoptic events are the result of internal factors causing the sensation that there is an object or image. Examples are phosphenes or flashes that occur when the vitreous is pulled on. Colorful dots are sometimes seen in the visual field against a hazy background. These can occur because stimuli other than photons can trigger the photoreceptor cells or other cells en route to the optic nerve. ...Read more

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Can you tell me about the visual field test?

Benign and painless: In this test you will sit looking at a dome on which lids are arrayed or a light is projected Your identification is by a signal button and the mapping of what you saw is produced as a clue to changes in glaucoma, or to the nervous system. ...Read more

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What causes dark spots in your visual field?

What causes dark spots in your visual field?

Floaters: It depends on what condition you have. Most of the time this occurs as you age. The vitrous in your eye shrinks and can sometimes detach from the retina. If the back part of the vitrous falls into your line of sight you may see spots or even spider webs ...Read more

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How can the visual field change with glaucoma?

There are typical…: Patterns of glaucomatous visual field loss. The goal of treatment is to try to keep the visual field from getting worse. Typically the defects start out in the periphery, either nasal (near the nose) or temporal (near the temple). Arcing type patterns are common. Sometimes the central vision is affected in the early stages, however it is typical for the central vision to change as a late finding. ...Read more

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Visual field test 2 mos. Apart w/fixation loss of 6/12 in 1st test & 3/14 in 2nd test. 1st test showed more damage than 2nd. Which test is most right?

The second: Less fixation losses on the second test means you were focusing on the fixation target more times than on the first test. Therefore, the second is the most accurate test. ...Read more

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Is visual field and peripheral field the same thing?

Is visual field and peripheral field the same thing?

Almost: Visual field refers to the patterning of the reception of the entire retina. As a subset, the peripheral field refers to the outer portion of the full visual field. So they refer to something the same but visual field is more comprehensive. ...Read more

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If our pupils did get very small, would this limit our visual field?

If our pupils did get very small, would this limit our visual field?

Minor issue: The pupils would have to get smaller than about 1.5 mm which is very rare. At that size or less, there would be diffractive changes which might cause some disturbance in the field of vision. But the usual smallest pupil is about 2 mm and this would not change the field. ...Read more

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How often should you have a visual field test when you have glaucoma?

How often should you have a visual field test when you have glaucoma?

Visual field test: In stable glaucoma, normally done once a year to verify that no change for the worse is occurring. If so, treatment will be intensified. If your glaucoma is unstable, or a change in the optic nerve is noted, a visual field is done at that time even if already done that year. Visual fields are measured besides the optic nerve cup/disc ratio, intraocular pressure, and nerve fiber layer. ...Read more

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What is the best treatment for a distortion in some part of visual field?

Visual field problem: "distortion" in the visual field is an unusual description. Usually distortion is described in the central or near central vision where straight lines appear crooked or bent. This virtually always indicates a retinal condition and should be evaluated asap. In the peripheral vision, problems are usually described as a vision loss or blind spot. This too should be checked. Possibly visual migraine. ...Read more

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Can having excessive amounts of caffeine cause you to fail the visual field test,?

Can having excessive amounts of caffeine cause you to fail the visual field test,?

No: Caffeine consumption does not interfere with your visual field data. If, however, you are extremely jittery, you may be more nervous and overly responsive with the hand held clicker which may lead to higher percentage of false positives and fixation losses. The latter decreases the reliability of the visual died results. ...Read more