Why Is My Vision Blurry?
Most blurry vision comes from everyday causes like needing new glasses, dry eyes or screen strain. Blurry vision that starts suddenly, affects one eye, or comes with headache, flashes or a curtain over your sight needs medical care right away.
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Disclosure: this site contains affiliate links. If you buy through them we may earn a commission, at no extra cost to you. This content is for general information only and is not medical advice. Talk to an eye doctor about any change in your vision.
Get help now if…
- Your vision became blurry suddenly, especially in one eye.
- It comes with a sudden shower of floaters, flashes of light, or a dark curtain over part of your vision.
- It comes with a severe headache, weakness, numbness, trouble speaking or a drooping face (call 911).
- Your eye is painful and red, or you had an injury.
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See Retina Clear on the official siteCurrent price, packages and guaranteeCommon everyday causes
| Cause | Typical signs | What usually helps |
|---|---|---|
| Outdated glasses or contacts | Gradual blur at distance or up close | Eye exam and updated prescription |
| Dry eye | Blur that clears when you blink, burning, grittiness | Screen breaks, artificial tears, see our dry eye guide |
| Digital eye strain | Tired eyes after long screen time | Regular breaks, good lighting, screen at arm's length |
| Age-related focus change (presbyopia) | Hard to read small print after 40 | Reading glasses or multifocals |
| Cataract | Cloudy, dim or glare-heavy vision that slowly worsens | Eye exam; surgery when it affects daily life |
| Blood sugar changes | Blur that comes and goes in people with diabetes | Blood sugar control and a diabetic eye exam |
Blurry vision in one eye
Blur in only one eye can come from a prescription difference or dry eye, but it can also signal a problem with the retina or the optic nerve. If it is new, get it checked.
What an eye doctor will check
Expect a vision test, an eye pressure check and often a dilated exam, where drops widen the pupil so the doctor can see the retina. Bring a list of your medications and any health conditions.
Can supplements help?
Supplements do not fix blurry vision from a prescription change, cataracts or most eye diseases. The best-studied eye formula, AREDS2, is meant for people with intermediate age-related macular degeneration and is taken under a doctor's guidance. Read more in Lutein for eyes.
Buy only from the official site to be covered by the 60-day guarantee.
Frequently asked questions
What causes sudden blurry vision?
Sudden blur can come from retinal problems, stroke, very high blood sugar or other urgent conditions. Treat it as an emergency and get care right away.
Can dry eyes cause blurry vision?
Yes. Dry eye is a common cause of blur that comes and goes and often clears when you blink.
Why is my vision blurry in one eye?
It can be a prescription difference or dry eye, but new blur in one eye should be checked by an eye doctor.
Can headache and blurry vision be serious?
They often come with migraine, but a sudden severe headache with blurry vision, weakness or trouble speaking is an emergency.