Cataract (ছানি): Early Signs, Causes & Treatment

It creeps in slowly. Colours look a little faded, lights have a halo around them at night, and reading needs brighter and brighter lamps. It can feel like looking through a foggy window that never clears. This is a cataract — ছানি in Bangla — the world’s leading cause of treatable blindness, and one that modern surgery handles remarkably well.

What is a cataract?

Inside your eye sits a clear natural lens that focuses light onto the retina. With age, the proteins in this lens slowly clump together and the lens turns cloudy. That cloudiness is a cataract. It usually develops gradually over years, which is why many people don’t notice it until vision is clearly affected.

Early warning signs

• Cloudy, blurry, or dim vision that glasses don’t fully fix
• Faded or yellowed colours
• Glare and halos around lights, especially when driving at night
• Frequent changes in your glasses prescription
• Poor night vision
• Double vision in one eye

বাংলায়: ধীরে ধীরে দৃষ্টি ঝাপসা হয়ে যাওয়া, রঙ ফ্যাকাশে দেখা, আর রাতে আলোর চারপাশে আভা দেখা — এগুলো ছানির প্রাথমিক লক্ষণ হতে পারে।

What causes cataracts?

Ageing is the main cause, but several things can bring cataracts on earlier or speed them up:

• Age — most cataracts are simply part of getting older.
• Diabetes, especially when blood sugar is poorly controlled.
• Long-term UV exposure from bright sunlight.
• Smoking and heavy alcohol use.
• Eye injury or certain medicines such as long-term steroids.
• A family history of early cataracts.

Can you slow cataracts down?

You can’t completely prevent age-related cataracts, but you can protect your eyes and slow things down:

• Wear UV-blocking sunglasses outdoors — one of the simplest protections. (See how UV rays damage your eyes and our guide to sunglasses for Bangladesh weather.)
• Don’t smoke, and keep diabetes well managed.
• Eat well — plenty of colourful fruits and vegetables.
• Have regular eye checks so any change is caught early.

How cataracts are treated

Here is the reassuring part: cataract surgery is one of the most common, safest, and most successful operations in the world. The cloudy natural lens is gently removed and replaced with a clear artificial lens (an intraocular lens). It is usually a short, day-care procedure, and most people see dramatically better within days.

After surgery, many people still use light glasses for reading or fine detail — which is completely normal.

When to see a doctor

See an eye specialist when blurry vision starts to interfere with daily life — reading, recognising faces, or driving safely at night. There is no need to “wait until it’s ripe,” as people once believed; modern surgery can be done whenever the cataract bothers you enough.

Protect and check: shield your eyes with good UV sunglasses and keep up regular eye tests. Nine Optic’s free home try-on makes it easy to find the right protective eyewear from home.

Frequently Asked Questions

Can cataracts be cured without surgery?

No. There is no drop or medicine that clears a cataract. Surgery is the only proven treatment — and it is safe, quick, and highly successful.

At what age do cataracts usually start?

Most age-related cataracts begin after 50 and become more common with each decade, though diabetes and heavy sun exposure can bring them on earlier.

Is cataract surgery painful?

No. It is done with numbing drops, usually takes only a short time, and most people feel little more than mild pressure. Recovery is normally quick.

Will I need glasses after cataract surgery?

Often, yes — many people still use light reading glasses afterwards, which is perfectly normal and depends on the lens chosen during surgery.