Letter B
Blurred vision
Also known as: Fuzzy vision, Unclear sight
Blurred vision symptom guide: what it can mean, possible causes, and when to seek care. Educational only.
Overview
Blurred vision can come from eye strain, unstable blood sugar, cataracts, or eye pressure problems. Sudden changes need prompt assessment. Do not delay if there is pain, bright flashes, or loss of part of the visual field.
Possible causes
- Eye strain or wrong glasses
- Poorly controlled diabetes
- Cataracts
- Dry eyes
- Nerve problems or stroke (less common)
When to see a doctor
Seek eye care or emergency help for sudden blur, pain, flashing lights, or one-sided weakness.