At a glance
Cataract surgery with phacoemulsification is an eye operation that removes a clouded natural lens and replaces it with a clear artificial one, restoring useful vision. The lens sits just behind the iris (the coloured part of the eye) and normally focuses light onto the retina at the back of the eye. When the lens becomes cloudy, that focusing fails and vision goes blurry, dim, or washed out.
In phacoemulsification (often called 'phaco'), the surgeon makes a tiny incision, usually less than three millimetres, at the edge of the cornea (the clear front surface of the eye). A fine probe is inserted and uses ultrasound vibrations to break the cloudy lens into small fragments. Those fragments are gently suctioned out, and a folded intraocular lens (IOL), a permanent plastic or acrylic lens, is placed inside the same natural pocket and unfolds to sit in position. No stitches are usually needed because the incision seals on its own.
Medical Condition
Phacoemulsification is performed when a cataract (clouding of the natural lens) is affecting a person's daily life or safety. The decision to operate is based on how much the vision loss is interfering with activities such as reading, driving, recognising faces, or working, not simply on how cloudy the lens looks under examination.
- Age-related cataracts that have progressed to the point of causing significant visual impairment
- Congenital cataracts (cataracts present at birth or in early childhood) that risk preventing normal vision development
- Traumatic cataracts caused by an injury to the eye
- Secondary cataracts developing as a complication of another eye condition or long-term steroid use
- Cataracts that prevent a doctor from examining the retina in order to manage conditions such as diabetic retinopathy (damage to retinal blood vessels caused by diabetes) or glaucoma (damage to the optic nerve often linked to raised eye pressure)
- Functional difficulties such as severe glare when driving at night or difficulty reading even with glasses
Phacoemulsification is usually not suitable in certain situations. Your ophthalmologist (eye surgeon) will discuss these with you based on your full eye assessment.
- Eyes with very advanced cataracts that have hardened to a degree where a different surgical technique may be safer
- Patients whose general health makes any form of surgery risky and who cannot tolerate even light sedation
- Certain rare corneal or retinal conditions where surgery is unlikely to improve vision and could worsen the eye
- Patients who do not consent to or are unable to cooperate with the procedure
Risks & Complications
Phacoemulsification is one of the most commonly performed surgical procedures in the world and carries a low overall risk, but like any operation it is not free of possible complications.
- Posterior capsule opacity (PCO): the most common complication after surgery, where the thin membrane left behind the IOL gradually clouds over weeks to months, causing blurred vision again. It is treated in the clinic with a quick laser procedure and does not require a second operation.
- Refractive surprise: the IOL power chosen before surgery does not fully match the eye, leaving the patient needing glasses for distance or reading after surgery.
- Infection (endophthalmitis): a rare but serious bacterial infection inside the eye that requires urgent treatment to protect vision.
- Raised eye pressure in the days after surgery, which usually settles with eye drops.
- Swelling of the cornea (corneal oedema), causing temporary blurred vision that usually resolves on its own.
- Cystoid macular oedema (CMO): swelling at the centre of the retina that can blur vision and typically responds to anti-inflammatory eye drops.
- Posterior capsule rupture during surgery: a tear in the membrane holding the lens, which may change the surgical plan and, in some cases, require a different IOL placement.
- Retinal detachment (separation of the retina from the back of the eye): rare, but more likely in people who are very short-sighted.
- Damage to the iris or other eye structures during the procedure.
- Anaesthetic complications, typically minor with local anaesthetic, though general anaesthesia carries its own separate risks.
Preparation & Procedure
Before the operation, the surgical team will carry out a detailed eye assessment to measure the exact dimensions of the eye. This measurement, called biometry, determines which IOL power will give the best possible vision after surgery. Tests typically include a slit-lamp examination (a microscope inspection of the eye's structures), corneal topography (a map of the cornea's shape), and sometimes an OCT scan (optical coherence tomography, a detailed cross-sectional image of the retina).
Patients who take blood thinners, aspirin, or certain diabetes medications are usually asked to discuss timing adjustments with their prescribing doctor in the days before surgery. Blood thinners do not always need to be stopped for eye surgery, but your team will advise based on your specific medication and health history. Any contact lenses should be left out for the period your surgeon recommends, as they can temporarily change the shape of the cornea and affect measurements.
If the operation is done under local anaesthesia (numbing drops or an injection around the eye), you can usually eat a light meal beforehand. If general anaesthesia (being fully asleep) is planned, the standard rule is nothing to eat or drink for several hours before. Your surgical team will give you the exact instructions. Alcohol should be avoided in the day or two before the procedure, and smoking is best reduced or stopped in the weeks before, as it can affect healing.
On the day of surgery, the process typically follows these steps:
- Dilating eye drops (drops that widen the pupil) are applied on arrival, usually over thirty to sixty minutes, so the surgeon has a clear view of the lens.
- Anaesthetic drops or an injection is given to numb the eye. Most patients feel pressure but no sharp pain during the procedure.
- A sterile drape covers the face, leaving only the operated eye exposed.
- The surgeon makes a small incision at the corneal edge and inserts the phacoemulsification probe.
- Ultrasound energy breaks the cloudy lens into tiny pieces, which are suctioned out.
- The folded IOL is inserted through the same small incision and gently opens inside the lens capsule.
- The incision is checked; in most cases it seals without sutures.
- An eye shield or patch is placed over the eye for protection.
- The patient rests briefly in a recovery area before going home, usually on the same day.
Aftercare
Most patients go home on the same day as surgery and notice an improvement in vision within the first twenty-four to forty-eight hours, though vision may be slightly blurry or watery at first while the eye settles. Full visual recovery and stabilisation of the prescription typically takes several weeks, and some patients need updated glasses once the eye has healed.
- Eye drops: antibiotic and anti-inflammatory drops are prescribed for several weeks after surgery. Using them on the schedule given by your doctor is the main task of recovery.
- Eye shield: a protective shield is usually worn at night for one to two weeks to prevent accidental rubbing of the eye during sleep.
- Driving: most surgeons advise against driving until vision in the operated eye meets the legal standard, which is confirmed at a follow-up appointment.
- Water in the eye: swimming and submerging the face in water should be avoided for several weeks. Showering is usually permitted, with care taken to keep soapy water away from the eye.
- Lifting and straining: heavy lifting and activities that significantly raise eye pressure, such as intense exercise, should be avoided for about two to four weeks, or as your surgeon advises.
- Rubbing the eye: the eye should not be rubbed or pressed, especially in the first few weeks, to protect the healing incision.
- Work and daily activities: office work and light daily activities can often resume within a few days, though your surgeon will give guidance based on your specific job.
- Follow-up appointments: visits are usually scheduled the day after surgery, at one week, and at four to six weeks to check healing, eye pressure, and the final prescription.
- Second eye: if both eyes need surgery, the second operation is usually scheduled after the first eye has healed, typically two to four weeks later.
Cost & What Determines It
The cost of phacoemulsification varies widely depending on where the surgery is done, the complexity of the case, and the type of lens implant selected. A straightforward cataract in an otherwise healthy eye with a standard lens costs far less than a complicated case requiring a premium lens or additional technology.
- Type of intraocular lens (IOL): a standard monofocal lens (which corrects vision at one distance) is less expensive than a premium lens such as a multifocal IOL (which corrects both distance and reading), a toric IOL (which also corrects astigmatism, or irregular corneal curvature), or an extended depth-of-focus lens.
- Surgical technology used: laser-assisted cataract surgery (FLACS, where a laser performs some steps that the surgeon otherwise does by hand) adds cost compared with manual phacoemulsification.
- Hospital or clinic class: private international hospitals charge more than public or government hospitals, and the country where you have surgery has a large effect on the base price.
- Complexity of the case: a dense or very advanced cataract, a small pupil, a shallow anterior chamber (the space in front of the lens), or a combined procedure addressing other eye conditions at the same time will increase surgical time and cost.
- Anaesthesia type: local anaesthetic drops are less expensive than sedation or general anaesthesia, which requires an anaesthetist and additional monitoring.
- Pre-operative tests: biometry, corneal topography, and other scans are sometimes bundled into the surgical price and sometimes billed separately.
- Length of stay: phacoemulsification is almost always a day-case procedure, but if an overnight stay is required, accommodation and nursing fees are added.
- Post-operative medications: antibiotic and anti-inflammatory eye drops are prescribed for several weeks and are usually purchased separately from the surgical fee.
- Follow-up consultations: post-operative check appointments may or may not be included in the quoted package price.
A hospital package for phacoemulsification typically covers the surgeon's fee, the operating theatre, standard nursing care on the day, the IOL itself, and one or two post-operative visits. Items that are often billed separately include the pre-operative biometry and mapping scans, the anaesthetist's fee if sedation is used, post-operative medications, prescription glasses or contact lenses after surgery, and any additional procedures needed if a complication arises.
For Indonesian patients, BPJS Kesehatan and most Indonesian private insurance policies do not cover surgical procedures performed outside Indonesia, which means the full cost is typically paid out of pocket or through an international private health insurance plan that explicitly covers overseas treatment. Before travelling, ask the hospital for a written cost estimate that itemises each component, including the IOL model, so there are no unexpected bills after the procedure.
Frequently Asked Questions
How long does cataract surgery take?
The procedure itself usually takes between 15 and 30 minutes per eye. You will spend additional time in the clinic for preparation and a short recovery observation before you are allowed to go home, so plan for a half-day visit in total.
Will I be awake during the operation, and will it hurt?
Most patients are awake but feel no pain, because the eye is numbed with local anaesthesia (numbing drops or a small injection around the eye) before the surgeon begins. You may notice light or mild pressure, but sharp pain is not expected. A mild sedative is sometimes given to help you stay calm and still.
How long is the recovery, and when can I go back to work?
Many people notice clearer vision within a day or two, though full stabilisation can take several weeks as the eye heals. Most patients with desk-based work return within a few days, while those doing physical labour or work in dusty environments are usually advised to wait two to four weeks. Your doctor will guide you based on how your eye is healing.
How much does cataract surgery cost?
The cost depends mainly on the type of replacement lens (intraocular lens) chosen, since premium lenses that also correct astigmatism or reduce reading-glass dependence carry a higher price than standard ones. Hospital class, surgical fees, and whether one or both eyes are treated in the same visit also affect the total. A written estimate from the hospital will give you the most accurate figure for your specific situation.
This page is general information, not a substitute for medical advice. Every case is different. Your doctor decides what is right for you.
