Cataracts waiting living patient overview
Informed by recognized medical guidance
Overview
A cataract is when the lens inside your eye becomes cloudy, like looking through a foggy window. It happens slowly over time and can make your vision blurry.
Key facts
- Cataracts are very common as you get older.
- They develop slowly and usually affect both eyes, but often one eye first.
- Cataracts are not a tumor or growth — it's a change in the eye's lens.
Yes, cataracts are extremely common. More than half of people over 65 have some clouding of the lens. By age 80, most people have cataracts or have had surgery to remove them.
Cataracts mainly affect older adults, but they can occur at any age, including in children (congenital cataracts). People with certain health conditions, like diabetes, or who have had eye injuries may develop cataracts earlier.
Symptoms
- Sudden vision loss in one or both eyes
- Sudden severe eye pain with nausea or vomiting
- Sudden flashes of light or a curtain-like shadow across vision (could be retinal detachment)
- ⚠Red, painful eye that doesn't go away
- ⚠New floaters that appear suddenly
- ⚠Vision changes that get worse over a few hours or days
Common symptoms
- Blurry or cloudy vision
- Colors look faded or yellow
- Difficulty seeing at night or in dim light
- Sensitivity to bright light or glare
- Seeing halos around lights
- Double vision in one eye
- Frequent changes in eyeglass or contact lens prescription
Symptoms in children
- Cloudy or white spot in the pupil (leukocoria)
- Poor vision that doesn't improve with glasses
- Unusual eye movements (nystagmus)
- Lazy eye (amblyopia)
Symptoms in older adults
- Gradual vision loss over months or years
- Increased trouble reading or driving at night
- Colors appearing less bright
- Need for brighter light for close work
Causes
Main causes
- Aging is the most common cause – the lens proteins break down over time.
- Injury to the eye can cause a cataract to form soon after.
- Some medications, like long-term use of steroids, can increase risk.
- Medical conditions such as diabetes can speed up cataract formation.
Risk factors
- Age over 60
- Family history of cataracts
- Diabetes
- High blood pressure
- Obesity
- Excessive alcohol use
- Smoking
- Prolonged exposure to sunlight (UV rays)
- Previous eye injury or surgery
When to see a doctor
See a doctor urgently if:
- If you notice a sudden change in vision, such as loss of sight or pain, seek emergency care.
Book a routine appointment if:
- If you have gradual changes in vision that affect your daily activities, such as reading, driving, or recognizing faces, make an appointment with an eye doctor (optometrist or ophthalmologist).
- Regular eye exams are recommended even if you have no symptoms, especially after age 60.
Diagnosis
An eye doctor will do a thorough eye exam to check for cataracts and measure their effect on your vision.
Tests that may be done
- Visual acuity test (reading letters on a chart)
- Slit-lamp exam (a special microscope to look at the front of your eye)
- Dilated eye exam (eye drops to widen your pupil so the doctor can see the lens clearly)
- Tonometry (a puff of air to check eye pressure)
What to expect at your appointment
The exam is painless and takes about an hour. Your eyes may be sensitive to light afterward, but you can go home the same day.
Treatment
Treatment depends on how much the cataract affects your quality of life. In early stages, you may not need surgery — vision aids and lifestyle changes can help. When the cataract interferes with daily activities, surgery is the only effective treatment.
Self-care at home
- Use brighter lamps or reading lights
- Wear anti-glare sunglasses outdoors
- Use a magnifying glass for close work
- Update your eyeglass prescription as needed
- Get larger print books or adjust device font sizes
- Avoid driving at night if glare is a problem
Medical treatments
There are no medications or eye drops that can cure cataracts. Surgery is the only proven treatment. During surgery, the cloudy lens is removed and replaced with a clear artificial lens (intraocular lens). This is usually done as a day procedure under local anesthesia.
When is surgery considered?
Surgery is usually recommended when cataracts cause significant visual impairment that affects your ability to perform daily tasks like reading, driving, or cooking. You and your doctor will decide together when the time is right.
Living with this condition
Living with cataracts often means adapting your environment to make the most of your remaining vision. Many people manage well for years before deciding on surgery. Accepting help from family and using visual aids can make daily life easier.
Lifestyle tips
- Wear a hat with a brim or sunglasses to reduce glare
- Use anti-reflective coatings on eyeglasses
- Arrange your home with good lighting and contrast (e.g., white plates on a dark tablecloth)
- Use large-print labels on medication bottles
- Ask for help with tasks like driving at night or reading small print
Diet and exercise
A healthy diet rich in antioxidants (fruits and vegetables) may help slow the progression of cataracts, though it cannot reverse them. Regular exercise is good for overall health and does not affect cataracts directly.
Mental health and emotional wellbeing
Cataracts can cause frustration, anxiety, or depression because vision loss affects independence and activities you enjoy. It's normal to feel this way. Talk to your doctor or a counselor if you feel concerned. Support from family and friends is important.
Prevention
There is no proven way to prevent cataracts, but you may be able to lower your risk by protecting your eyes from UV light, not smoking, managing health conditions like diabetes, eating a healthy diet, and limiting alcohol.
Complications
If left untreated
- If left untreated, cataracts can cause significant vision loss, making it hard to do everyday tasks and increasing the risk of falls.
- In rare cases, very advanced cataracts can lead to glaucoma (increased eye pressure) or inflammation (phacolytic glaucoma).
- Complete blindness can occur but is reversible with surgery in most cases.
Long-term outlook
The outlook is very good. Cataract surgery is one of the safest and most successful operations, with over 95% of people experiencing improved vision. Most people can resume normal activities within a few days to weeks. Even without surgery, many people adapt well and maintain good quality of life. Remember, cataracts are treatable — you don't have to live with blurry vision forever.
Find support
International organisations
Local organisations
- Macular Society ↗ · UK
Helplines
External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.
Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
Related conditions
Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 30, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.