vision

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Vision is a feature of a person's brain that allows him to see. He must have normal eyes, optic nerves (that stretch from the eyes to the back of his brain), and visual cortex (the vision center in the brain), in order to see properly. An ophthalmologist is a doctor specializing in vision.

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What can aid vision?

Good dna

Vision
decent health and nutrition, sunglasses, regular eye check ups depending on your age
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Dr. David A. Sachs answered:

Why does vision blur?

Many possibilities

Vision
Blurred vision can be cause from many different reasons. A need for glasses is probably the most common cause for blurred vision but it can also be caused by dry eye, cataracts, retinal damage, or many other causes. If your vision is blurry see your ophthalmologist for further evaluation.
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Dr. Jay C. Bradley answered:

i have blurred vision?

Blurred vision

Blurry_vision
Go see an eye doctor.
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Dr. Alan Mindlin answered:

cloudy vision headeq ?

Eye versus body

Foggy_vision
This can range from simple eye strain from accommodative spasm to uncontrolled diabetes, acute angle closure glaucoma, or meningitis ( inflammation of the brain). This should be evaluated quickly.
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Lasik - night vision.?

Some get glare

Vision
Some patients will notice glare or "haloes" around lights at night following LASIK surgery. In the majority of cases, it is not severe and dissipates over several months following the procedure. Nearly all patients who have LASIK are pleased that they did, although the displeased minority is very vocal in online communities. A prudent LASIK surgeon will discuss these risks before the procedure.
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What is tunnel vision?

Loss of peripheral

Vision
In tunnel vision, the peripheral portions of the retina lose their sensitivity and only the central portion remains (a tunnel straight ahead). Most often found in inherited degenerations like retinitis pigmentosa, some drugs can do this as well as rare retiinal infections. Advanced tunnel vision is very handicapping as victims cannot see their feet, or objects in view.
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Dr. John A. Weeks answered:

Vision due to old age?

Presbyopia

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most people have trouble focussing closely as they get older. changes in vision from cataracts and/or macular degeneration are also very common. any sudden change in vision should be evaluated promptly since all of the above occur gradually
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Dr. Ali A. Zaidi answered:

Blurred vision after PVD?

Not common

Vision
A posterior vitreous detachment (PVD) is when the vitreous gel pulls away from the retina. The posterior aspect of the vitreous can be seen as a floater, often appearing like a spider web in the vision. In theory, if this floater obstructs the macula, or central retina, it could blur the vision. However, this is usually transient. If blurry vision is constant, get evaluated for retinal detachment
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What causes blurry vision?

Many reasons

Blurry_vision
Too many to list. Some are benign and some are very dangerous. You need to be examined by an eye doctor.
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How to improve eye vision?

Examination

Head-eye
Most vision lowered vision in your age group is due to a need for eyeglasses (or contacts). You can be evaluated for these by your ophthalmologist. If you have underlying correctable problems they can be addressed at this time. Other solutions may include LASIK correction and some other means. Eye exercises will not work and methods such as orthokeratology are short term only.
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