Cataracts happen when the lens of the eye becomes cloudy. They are common with aging, but diabetes can increase the risk and may make cataracts develop earlier for some people.
Quick summary
The useful message is simple: do not wait until vision is badly affected before checking eye health.
Key takeaways
- Cataracts can cause blurry vision, glare, faded colors, or trouble with night driving.
- Diabetes can also cause other eye problems, including retinopathy and macular edema.
- Regular dilated eye exams help separate cataracts from retina problems.
- Sudden vision loss or new severe eye symptoms need urgent care.
What to watch for
- Cloudy or blurry vision.
- Glare around lights.
- Poor night vision.
- Frequent changes in glasses prescription.
- Difficulty reading, driving, or seeing contrast.
What care may involve
An eye clinician can check whether symptoms are from cataracts, diabetic retinopathy, dry eye, glaucoma, or another problem. Cataract surgery may be considered when vision problems interfere with daily life, but diabetes eye disease should also be reviewed.
Good glucose, blood pressure, and cholesterol care can support eye health, but it does not replace eye exams.
Practical takeaway
If vision is changing, book an eye exam rather than guessing the cause. Cataracts are treatable, but diabetes retina problems also need attention.
Safety note
This article is not a substitute for medical care. Seek urgent eye care for sudden vision loss, new curtain-like vision changes, severe eye pain, flashes, many new floaters, or symptoms that feel unsafe.
What to ask your care team
- How often should I have a dilated eye exam?
- Are my symptoms from cataracts, retina disease, or another cause?
- Do I need cataract surgery or retina treatment first?
Related reading
Source summary
- Diabetes and Vision Loss, Centers for Disease Control and Prevention. Patient guidance. Accessed June 5, 2026. Source
- Diabetic Eye Disease, National Institute of Diabetes and Digestive and Kidney Diseases. Patient guidance. Accessed June 5, 2026. Source
- Cataracts, National Eye Institute. Patient guidance. Accessed June 5, 2026. Source
- Diabetic Retinopathy, National Eye Institute. Patient guidance. Accessed June 5, 2026. Source