7 doctors weighed in:

What does it mean if you have blurry vision? Is this a neurological condition?

7 doctors weighed in
Dr. Andrew Shatz
Ophthalmology
5 doctors agree

In brief: Difficulty focusing

Blurred vision is a symptom, meaning you cannot see sharply.
The degree of blur can vary, as can the cause. Anything that defocuses the eye (nearsightedness, farsightedness, astigmatism, presbyopia), blocks light getting to the film layer (cataract or scars), or affects the film layer or optic nerve (retinal swelling, optic neuritis) can blur the vision. An eye doctor can determine the cause.

In brief: Difficulty focusing

Blurred vision is a symptom, meaning you cannot see sharply.
The degree of blur can vary, as can the cause. Anything that defocuses the eye (nearsightedness, farsightedness, astigmatism, presbyopia), blocks light getting to the film layer (cataract or scars), or affects the film layer or optic nerve (retinal swelling, optic neuritis) can blur the vision. An eye doctor can determine the cause.
Dr. Andrew Shatz
Dr. Andrew Shatz
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Dr. Daniel Goldberg
Ophthalmology

In brief: Complicated answer

The answer to this question is complex and includes just about every conceivable diagnosis in the field of ophthalmology.
After all, blurred vision means impaired sight and can result from any condition ranging from neurological as in optic neuritis (often the presenting symptom in multiple sclerosis), to corneal problems (such as dry eye, corneal abrasions and corneal dystrophies such as keratoconus), to inflammatory problems of the eye (such as uveitis), to retinal diseases (including retinal detachment, diabetic retinopathy, macular degeneration, macular edema and vascular occlusions), to name just a few. The causes include many benign and many serious vision threatening as well as life threatening conditions depending on severity and suddenness of onset. Perhaps the most common benign causes of blurred vision are myopia (near sightedness) and presbyopia (the inability to focus at near after age 40 and astigmatism. All of these conditions may be distinguished by the clinician based on the patient’s age, medical history and presenting symptoms. In short, there is no way to simply answer this question and a good, thorough ophthalmologic examination should surely elucidate the cause.

In brief: Complicated answer

The answer to this question is complex and includes just about every conceivable diagnosis in the field of ophthalmology.
After all, blurred vision means impaired sight and can result from any condition ranging from neurological as in optic neuritis (often the presenting symptom in multiple sclerosis), to corneal problems (such as dry eye, corneal abrasions and corneal dystrophies such as keratoconus), to inflammatory problems of the eye (such as uveitis), to retinal diseases (including retinal detachment, diabetic retinopathy, macular degeneration, macular edema and vascular occlusions), to name just a few. The causes include many benign and many serious vision threatening as well as life threatening conditions depending on severity and suddenness of onset. Perhaps the most common benign causes of blurred vision are myopia (near sightedness) and presbyopia (the inability to focus at near after age 40 and astigmatism. All of these conditions may be distinguished by the clinician based on the patient’s age, medical history and presenting symptoms. In short, there is no way to simply answer this question and a good, thorough ophthalmologic examination should surely elucidate the cause.
Dr. Daniel Goldberg
Dr. Daniel Goldberg
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