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Doctor insights on: Cortical Blindness

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Dr. Jeffrey Stevens
11 doctors shared insights

Cortical Blindness (Overview)

Cortical blindness refers to blindness that is caused by damage to the part of the brain that processes images. In cortical blindness, the eyes are undamaged, but the person is still unable to see.


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What is transistent cortical blindness?

What is transistent cortical blindness?

Brain vision loss: The eye sends information to the brain (occipital lobe) which computes the image we see as vision. If there is a disturbance to the function of this part of the brain, that is short term and returns to normal, we call it transient cortical blindness. This can be a circulatory problem, due to trauma or to some rare drug side effects. A neurologist can help you sort this out. ...Read more

Dr. Jeffrey Stevens
11 doctors shared insights

Cortical Blindness (Overview)

Cortical blindness refers to blindness that is caused by damage to the part of the brain that processes images. In cortical blindness, the eyes are undamaged, but the person is still unable to see.


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What are the symptoms of cortical blindness?

What are the symptoms of cortical blindness?

Inability to see: Cortical blindness is loss of acuity due to damage to the occipital lobe of the brain. This can be a birth defect or an acquired vascular defect. If at birth, the child will show no recognition of the space around him, the eyes usually will dance (nystagmus) and will not track together. As an adult, the eyes cannot fixate, the pupils usually react to light but no vision will be reported. ...Read more

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What are the tests for cortical blindness?

What are the tests for cortical blindness?

A few: Cortical blindness is due to failure of the occipital lobe, the visual information processing center of the brain, to function properly. Many of these occur at birth. The eyes frequently are normal with normal pupillary reaction, yet the patient reports not seeing anything. There are tests of cortical electrical activity (vep) similar to an eeg which can register the lack of activity. ...Read more

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What causes cortical blindness (like examples) and what is it?

What causes cortical blindness (like examples) and what is it?

Multiple: The back part of your brain, the occipital lobe is what 'sees' images, your eyes are just fancy attenaes transmitting the image to your occipital lobe. If there is anything wrong with the cortex of your occipital lobe, this is cortical blindness. Stroke, migraine, seizures, tumors, all can be problems. ...Read more

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What is the treatment for cortical blindness?

What is the treatment for cortical blindness?

Generally none: Cortical blindness results from failure of the brain interconnections to the visual cortex to develop, or damage directly to the cortex from injury and vascular catastrophe. No treatment is possible. Such persons should be entered into programs for the blind and poorly sighted to develop alternate means of coping. ...Read more

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Is there a cure for cortical blindness?

No: That's when you're brain can't process the information, and eye is usually fine.There is no treatement for this at this time. ...Read more

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What is transistent cortical blindness?

Brain vision loss: The eye sends information to the brain (occipital lobe) which computes the image we see as vision. If there is a disturbance to the function of this part of the brain, that is short term and returns to normal, we call it transient cortical blindness. This can be a circulatory problem, due to trauma or to some rare drug side effects. A neurologist can help you sort this out. ...Read more

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What are the tests for cortical blindness?

A few: Cortical blindness is due to failure of the occipital lobe, the visual information processing center of the brain, to function properly. Many of these occur at birth. The eyes frequently are normal with normal pupillary reaction, yet the patient reports not seeing anything. There are tests of cortical electrical activity (vep) similar to an eeg which can register the lack of activity. ...Read more

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What are the symptoms of cortical blindness?

Inability to see: Cortical blindness is loss of acuity due to damage to the occipital lobe of the brain. This can be a birth defect or an acquired vascular defect. If at birth, the child will show no recognition of the space around him, the eyes usually will dance (nystagmus) and will not track together. As an adult, the eyes cannot fixate, the pupils usually react to light but no vision will be reported. ...Read more

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What causes cortical blindness (like examples) and what is it?

Multiple: The back part of your brain, the occipital lobe is what 'sees' images, your eyes are just fancy attenaes transmitting the image to your occipital lobe. If there is anything wrong with the cortex of your occipital lobe, this is cortical blindness. Stroke, migraine, seizures, tumors, all can be problems. ...Read more

Dr. Damien Luviano
50 doctors shared insights

Blindness (Definition)

Vision impairment and blindness are conditions in which a person cannot see well or see at all, even with glasses or contact lenses. If a person's best vision (with correction) out of either eye is only 20/70 - 20/200, he is impaired. If he can see no better than 20/200 or his visual field is no more than 20 degrees (severe "tunnel" vision), ...Read more


Dr. Tim Conrad
616 doctors shared insights

Vision Loss (Definition)

Vision loss is where a person becomes unable to see to the extent that they were previously able. This can include a total loss of vision, a loss of visual acuity, or a loss of part ...Read more