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Doctor insights on: What Causes Dark Spots In Your Visual Field

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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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What are these colorful spots in the visual field?

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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Ideas? What nonprocessive conditions cause a visual field defect?

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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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

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What could cause wiggly white lines which come and go across visual field?how to get rid of themfor good?vision check normal

What could cause wiggly white lines which come and go across visual field?how to get rid of themfor good?vision check normal

Visual auras: Its good to see that the eye exam was normal as flashing lights can sometimes indicate a retinal problem. Otherwise, these are probably visual auras that can sometimes be associated with a migraine like headache afterwards. If this is what you have, the symptoms gradually increase over 5 minutes and lasts for less than an hour. Vision then returns to normal after that. Take care. ...Read more

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What can cause wiggly moving lines in vision, move from top to bottom of visual field?Vision checked all fine, no headache with.

What can cause wiggly moving lines in vision, move from top to bottom of visual field?Vision checked all fine, no headache with.

Floaters?: It's possible you are seeing floaters in your visual field, particularly if they're seen in daylight while looking at a bland backdrop, like a sky or white wall. The floaters should not block or affect visual acuity.Or if your linear squiggly lines have a building, perhaps curvilinear pattern that shimmers or has a sawtooth or klaidescopic appearance disturbing vision with/without pain: ?Migraine. ...Read more

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Have Macular pucker causes white to appear gray. Also have glaucoma. Will visual field test be inaccurate because background is gray instead of white.

Likely to be fine: There can be multiple conditions in an eye at one time, and when this is the case a visual field may be a bit off from it's full potential. But it can still give useful information. In your case, if it is inaccurate, some changes can be made to the settings of the test to make it easier. If still inaccurate, there are still other parameters/tests of your eye that can be utilized to follow it. ...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