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Where is lesion if you have normal vision in eyes right half but absence of vision in eyes on left half of visual field?
Wiki User
∙ 13y ago
The lesion will be at the opposite of the absent vision of the eye which is the left eye.
Marieb&Hoehn page 578
A lesion of the right optic nerve causes a total loss of vision in the right eye. the lesion would be of the left optic nerve is the vision were to be reversed
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoOnly crossed (contralateral) fiber of the thalamus lateral geniculate nucleus on the right brain, and uncrossed (ipsilateral) fiber of the thalamus lateral geniculate nucleus on the left brain.
Wiki User
∙ 14y agoIf I understand your question correctly, here is what I had found when I was looking for information on my brother's condition. He is a stroke Survivor with the exact description you mention. Hope this helps. Ahomonymous hemianopsia is the loss of half of the field of view on the same side in both eyes. It occurs frequently in stroke and traumatic brain injuries due to the connections and wiring of the visual system with the brain. The visual images that we see to the right side travel from both eyes to the left side of the brain, while the visual images we see to the left side in each eye travels to the right side of the brain. Therefore, damage to the right side of the posterior portion of the brain can cause a loss of the left field of view in both eyes. Likewise, damage to the left posterior brain can cause a loss of the right field of vision. http://www.lowvision.org
Wiki User
∙ 14y agoThe lesion must be before the optic chiasm.
Wiki User
∙ 9y agoThis means that a person is either blind in the right eye or very close to blind. It could also mean that they have no peripheral vision.
Wiki User
∙ 9y agoIf you have an absence of vision in the right eye's visual field, you may have a headache coming on. This could also be due to a problem with the optic nerve.
Wiki User
∙ 13y agoThe lesion is somewhere in the right hemisphere of the brain. With more details about the exact symptoms, the location within the right hemisphere could be determined more specifically.
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What is another name for sharpness of vision?
Sharpness of vision is also called visual acuity.-Visual acuity is determined by the ability to see visual details (in normal light).
What is a beatific vision?
A beatific vision is an individual's external and direct visual interpretation of God.
Vision and visual perception occur in what lobe?
Occipital Lobe
What Specialized visual receptors play a key role in night vision and peripheral vision?
The "rod" type photoreceptors of the retina.
What visual processing in the thalamus does not contribute significantly to the A high-acuity vision B depth perception C movement perception D night vision?
night vision
Where is a lesion if there is normal vision in both eye for the right half visual field but there is absence of vision in both eyes for left half of the visual fieled?
If there is normal vision in both eye for the right half visual field but there is absence of vision in both eyes for left half of the visual field, then the lesion is in the left eye. Since the vision for right eye is clear, the lesion is in the left.
Normal vision in both eyes for right half of the visual field absence of vision in both eyes for left half of the visual field?
Normal vision in both eyes results in the right half of the visual field being dominant. The absence of vision in both eyes results in the left half of the visual field being dominant.
What is a visual test for normal vision?
Usually a Snellen's Chart is used to assess vision.
What is another name for sharpness of vision?
Sharpness of vision is also called visual acuity.-Visual acuity is determined by the ability to see visual details (in normal light).
If vision is to visual then hearing is to what?
audio If vision is to visual then hearing is to sound or audio.
What is meant by human Twenty twenty vision?
When someone is decribed as having twenty-twenty (or more correctly 20/20) vision it simply implies that they have "normal" visual acuity or "sharpness" of vision. See "Visual acuity" in Wikipedia for a full explanation of the derivation of the term.
What are the normal results of vision training?
A carefully and individually tailored program of vision therapy should result in a gradual improvement in whatever complex visual function is being addressed.
Can i get 2020 eye site in my left eye?
20 20 vision refers to the normal visual acuity, both in the right and left eyes.
If Vision is to visual then hearing is to?
Auditory
Vision is to visual as hearing is to?
Auditory
Is 20-70 vision considered bad?
No. Not really. "Normal" vision is around 20/20 or 20/30. Having 20/60 means that you need to be 20 feet away from an object rather than a "normal" person who can see that object at 60 feet. At 20/60 you should still be able to function with everyday life and only need glasses to drive or to read a blackboard at school. 20/60 is only a mild impairment. 20/30 to 20/60 is considered mild vision loss, or near-normal vision 20/70 to 20/160 is considered moderate visual impairment, or moderate low vision 20/200 to 20/400 is considered severe visual impairment, or severe low vision 20/500 to 20/1,000 is considered profound visual impairment, or profound low vision less than 20/1,000 is considered near-total visual impairment, or near total blindness
What does the term visual disturbances include?
Double vision (diplopia), moving or blurred vision due to nystagmus (involuntary rapid movements of the eyes), reduced visual acuity, reduced visual field.
