Cataract: Causes, Symptoms, Types, Surgery and Cost in India

Cataract is the clouding of the eye's natural lens, and according to the World Health Organization it is the leading cause of blindness worldwide. It most often develops with age, but it can also affect babies, children and younger adults, particularly people with diabetes or a history of eye injury. In many parts of Africa, the Middle East, Central Asia and South Asia, untreated cataract still causes avoidable blindness simply because people cannot access safe surgery. The good news is that cataract surgery is one of the safest and most successful operations in all of medicine. In most cases it takes less than 30 minutes, is done under local anaesthesia and restores clear vision within days. India performs a very large number of cataract operations every year, and its leading eye hospitals offer the latest technology and premium lens implants at affordable prices.

What is a Cataract?

Inside the eye, behind the coloured iris, sits a clear lens that focuses light onto the retina. With age and other factors, proteins in the lens break down and clump together, making the lens cloudy, yellow or brown. Light can no longer pass through clearly, so vision becomes blurred, dim or hazy, much like looking through a frosted window.

Types of cataract

• Nuclear cataract: forms in the centre of the lens and is the most common age-related type. It often causes increasing short-sightedness and yellowing of colours.
• Cortical cataract: wedge-shaped opacities that start at the edge of the lens and work inwards, often causing glare.
• Posterior subcapsular cataract: forms at the back of the lens, progresses faster and is more common in people with diabetes or on long-term steroids. It affects reading vision and causes glare.
• Congenital and paediatric cataract: present at birth or developing in childhood, caused by genetic factors, infections during pregnancy (such as rubella) or metabolic conditions. These need urgent treatment to prevent permanent "lazy eye".
• Traumatic and secondary cataract: caused by eye injury, radiation, inflammation or other eye diseases.

Cataracts are also described by their maturity, from early (immature) to mature and hypermature. Very advanced cataracts are more difficult to remove and carry higher risks, so it is better not to wait until vision is almost lost.

Causes and Risk Factors

• Ageing: the most common cause; most people develop some lens clouding after 60.
• Diabetes: causes cataracts to form earlier and progress faster.
• Ultraviolet (UV) exposure: long-term exposure to strong sunlight, common in tropical Africa, the Gulf and South Asia, increases the risk, especially without sunglasses or a hat.
• Smoking and heavy alcohol use.
• Long-term steroid use, including tablets, inhalers and eye drops.
• Eye injury, previous eye surgery or inflammation (uveitis).
• High myopia and family history.
• Malnutrition and severe dehydration episodes, which have been linked to earlier cataract in some low-income settings.
• Infections in pregnancy, such as rubella, which can cause congenital cataract in the baby; vaccination helps prevent this.

Symptoms of Cataract

Cataracts usually develop slowly and painlessly. Common symptoms include:

• Cloudy, blurred or dim vision
• Increasing difficulty seeing at night and driving in the dark
• Sensitivity to light and glare from headlights or sunlight
• Seeing halos around lights
• Faded or yellowed colours
• Double vision in one eye
• Frequent changes in spectacle prescription
• A white or grey appearance of the pupil in advanced cases

Warning signs needing urgent attention

A white reflex in a baby's or child's pupil (seen in photographs or by parents), sudden loss of vision, a painful red eye with a very mature cataract, or flashes and floaters should be checked by an eye specialist immediately. A white pupil in a child may also be a sign of retinoblastoma, a serious eye cancer, so it must never be ignored.

Diagnosis of Cataract

An ophthalmologist diagnoses cataract with a thorough eye examination, including:

• Visual acuity test to measure how well you see at different distances.
• Slit-lamp examination to look at the lens and grade the cataract.
• Dilated retinal examination to check the retina and optic nerve, since conditions such as diabetic retinopathy, macular degeneration or glaucoma affect the expected result.
• Intraocular pressure measurement.
• Biometry (optical biometry such as IOLMaster) and corneal topography to calculate the correct power and type of lens implant.
• Specular microscopy to check the health of the corneal endothelium, and OCT of the macula where needed.

Treatment Options for Cataract

In the very early stages, stronger glasses, better lighting and anti-glare sunglasses may help. However, no eye drops or medicines can reverse a cataract. When cataract starts to interfere with daily activities such as reading, driving or work, surgery is the only effective treatment.

Phacoemulsification (micro-incision cataract surgery)

This is the standard modern technique. Through a tiny incision of around 2 to 3 mm, the surgeon uses ultrasound energy to break up the cloudy lens and gently remove it, then inserts a foldable artificial intraocular lens (IOL). Stitches are usually not needed and recovery is quick.

Femtosecond laser-assisted cataract surgery (FLACS)

A computer-guided laser performs some steps of the surgery, such as creating the incisions and opening the lens capsule, with high precision. It may be useful in certain cases, for example with dense cataracts or when correcting astigmatism.

Small incision cataract surgery (SICS) and other techniques

Manual SICS is a safe and effective option, particularly for very hard or mature cataracts. Indian surgeons have extensive experience with this technique.

Choice of lens implant (IOL)

• Monofocal IOL: gives clear vision at one distance (usually far); reading glasses are needed afterwards.
• Toric IOL: corrects astigmatism as well as cataract.
• Multifocal and trifocal IOLs: provide distance, intermediate and near vision, reducing dependence on glasses.
• Extended depth of focus (EDOF) IOLs: give a continuous range of vision with fewer halos than some multifocal lenses.

Paediatric cataract surgery

Children's cataract surgery is a specialised procedure, often followed by glasses, contact lenses and patching to develop vision. Early surgery gives the best chance of good sight. Children with cataract may also have a squint, which can be treated by the same team; read about squint surgery in India.

Cost of Cataract Surgery in India

Cataract surgery in JCI and NABH accredited hospitals in Delhi/NCR costs significantly less than in the USA, UK or the Gulf, while using internationally approved lens implants. Indicative starting prices per eye are:

These are starting estimates. The final cost depends on the type of lens chosen, the complexity of the cataract, other eye conditions, whether one or both eyes are treated and the hospital selected. Contact Satyug Healthcare at +91-8860606766 / +91-9910655125 (WhatsApp) for a free medical opinion and cost estimate.

Recovery After Cataract Surgery

Most patients go home the same day. Vision often improves within one to two days, with full stabilisation in a few weeks. During recovery:

• Use the prescribed antibiotic and anti-inflammatory eye drops exactly as instructed.
• Wear the protective shield at night for the first week and avoid rubbing the eye.
• Avoid swimming, dusty environments and heavy lifting for a couple of weeks.
• Keep water and soap out of the eye while bathing for about a week.
• Attend the follow-up checks, usually on day one and around one week after surgery.

Some people develop clouding of the membrane behind the implant months or years later, called posterior capsule opacification. It is easily treated with a quick, painless YAG laser procedure in the clinic.

Prevention

Age-related cataract cannot be completely prevented, but you can delay it by wearing UV-protective sunglasses and a wide-brimmed hat, not smoking, controlling diabetes, eating a diet rich in fruits and vegetables and avoiding unnecessary steroid use. Regular eye checks after 40 help detect cataract and other eye diseases early.

Why Choose India for Cataract Surgery?

• Indian eye surgeons are among the most experienced in the world, performing very high volumes of cataract surgery.
• Advanced technology, including optical biometry, femtosecond lasers and premium IOLs from leading global manufacturers.
• Significant cost savings compared with Western and Gulf countries.
• Short stay: most patients can fly home within a week.
• Expertise in complex cases, including mature cataracts, paediatric cataracts and cataracts combined with glaucoma or corneal disease.

Step-by-Step Process to Travel to India for Treatment

1. Share your reports - send your latest reports, scans/CD, angiography or echo films and passport copy to Satyug Healthcare on WhatsApp (+91-8860606766 / +91-9910655125) or email.
2. Free medical opinion & cost estimate - within 24-72 hours we share opinions and written cost estimates from 2-3 JCI/NABH-accredited hospitals and specialists.
3. Choose hospital & doctor - compare doctor experience, hospital, room category and total cost; we help you decide with no extra charge.
4. Visa Invitation Letter (VIL) - the hospital issues a VIL for the patient and up to two attendants; we arrange it within 24-48 hours.
5. Apply for Indian e-Medical Visa - apply online for the e-Medical Visa (patient) and e-Medical Attendant Visa (family) using the VIL; most approvals come in 3-5 working days.
6. Book flights & accommodation - we suggest flights and arrange a guest house, service apartment or hotel near the hospital to suit your budget.
7. Free airport pickup - our representative receives you at the airport and takes you to your hotel or directly to the hospital.
8. Hospital admission & treatment - a dedicated coordinator and language interpreter stay with you for registration, tests, doctor consultations, the procedure and billing.
9. Discharge & follow-up - you receive the discharge summary, prescriptions and fitness-to-fly certificate; follow-up checks are done before you fly.
10. Return home & tele-follow-up - we arrange airport drop and stay connected for online follow-up consultations with your doctor in India.

Frequently Asked Questions

Can cataract be treated without surgery?

No. Glasses and better lighting can help in the early stages, but no eye drops, medicines or diets can remove a cataract. Surgery is the only effective treatment once vision is affected.

Is cataract surgery painful?

No. The eye is numbed with anaesthetic drops or a small injection, so most patients feel only mild pressure. Afterwards there may be slight grittiness for a day or two.

How long should I stay in India for cataract surgery?

Most patients stay about 5 to 7 days for one eye. If both eyes are operated, the second eye is often done a few days after the first, so a stay of around 10 days is usual.

Which lens is best for me?

It depends on your eyes, lifestyle and expectations. Monofocal lenses give excellent distance vision with reading glasses, toric lenses correct astigmatism and multifocal or EDOF lenses reduce dependence on glasses. Your surgeon will recommend the most suitable option after testing.

Can a cataract come back?

A cataract cannot grow back once the lens is removed. However, the capsule behind the implant can become cloudy later. This is easily treated with a quick YAG laser procedure.

Can I have cataract surgery if I have diabetes?

Yes. Many cataract patients have diabetes. Blood sugar should be well controlled, and the retina is examined carefully before and after surgery to check for diabetic eye disease.

When can I fly after cataract surgery?

Flying is generally safe a few days after uncomplicated cataract surgery, once your surgeon has examined the eye at the follow-up visit.

Disclaimer: This article is for general information only and is not a substitute for a consultation with a qualified doctor.