If your doctor has told you that you need cataract surgery, it helps to know that there isn’t just one type of procedure. The most suitable technique depends on your eyes, the density of your cataract and other individual factors.
Cataract surgery, also known as lens extraction surgery, is most commonly performed using a technique called phacoemulsification. In certain situations, extracapsular cataract extraction (ECCE) or, much less commonly, intracapsular cataract extraction (ICCE) may be recommended instead.
In this guide, Dr Christopher Khng explains the three main types of cataract surgery, how they differ and when each approach may be considered, so you can feel more prepared for your consultation.
Cataracts are a common eye condition in which the eye’s natural lens gradually becomes cloudy, leading to symptoms such as blurred vision, increased glare, difficulty reading and problems with everyday activities.
Although cataracts are most common with ageing, they can also develop earlier due to factors such as diabetes, previous eye injuries, certain medications, genetics or prolonged ultraviolet (UV) exposure.
When cataracts begin to affect your vision and daily life, cataract surgery may be recommended to restore clearer vision. Before deciding on surgery, your ophthalmologist will assess your eyes and discuss whether it is the most appropriate treatment option for your condition.
This guide explains the different types of cataract surgery, what each procedure involves and how your surgeon determines the most suitable option for you, helping you make a more informed decision about your treatment.
What Are the Three Types of Cataract Surgery?
There are three main types of cataract surgery: phacoemulsification (phaco), femtosecond laser-assisted cataract surgery (FLACS), and extracapsular cataract extraction (ECCE). Each removes the eye’s clouded natural lens and usually replaces it with an artificial intraocular lens (IOL). The right option depends on the density of the cataract and the health of the eye.
- Phacoemulsification (phaco): ultrasound breaks up and removes the lens through a tiny incision.
- Femtosecond laser-assisted (FLACS): a laser performs key steps for added precision.
- Extracapsular cataract extraction (ECCE): used for denser or more advanced cataracts.
1. Phacoemulsification
Phacoemulsification, or phaco, is a cataract surgery technique that uses an ultrasound probe to break up the cloudy lens and suction it out through a tiny incision. This procedure often involves the implantation of an artificial lens called the intraocular lens (IOL) to replace the natural lens.
The key advantages of phacoemulsification include its minimally invasive nature and quick procedure time, facilitating faster recovery and minimal patient discomfort.
2. Femtosecond Laser-Assisted Cataract Surgery (FLACS)
In this approach, a femtosecond laser is used to create incisions for accessing and fragmenting the cataract. The second stage closely resembles traditional cataract surgery, involving the removal of cataract segments through ultrasound-based phacoemulsification.
Leveraging computer-driven technology, the femtosecond laser takes over certain manual aspects of surgery. Its multifaceted advantages encompass several potential benefits.
Firstly, it may enhance visual outcomes by consistently creating more circular capsulorhexis, thus reducing the risk of artificial lens misalignment.
Secondly, the laser’s reduced ultrasound energy usage could potentially decrease the likelihood of corneal injuries.
Thirdly, it may reduce the risk of surgical complications, particularly in cases involving complex cataracts. Additionally, femtosecond laser corneal incisions could potentially reduce astigmatism during cataract surgery.
However, know that femtosecond laser-assisted cataract surgery is still an evolving technique, with its full potential yet to be achieved by experts.
3. Extracapsular Cataract Extraction (ECCE)
Extracapsular cataract extraction begins by creating a minor cut along the outer periphery of the cornea. The surgeon subsequently gently accesses and opens the front part of the lens capsule.
In cases where cataracts have progressed significantly, they can typically be extracted intact; however, for any smaller fragments, suction may be employed for removal. This procedure is typically performed for cases where phaco or laser-assisted surgery is not suitable due to the cataract’s size or density.
ECCE belongs to a broader group of techniques called cataract extraction. The two classical forms are extracapsular cataract extraction (ECCE), where the lens is removed but the back of the lens capsule is left in place, and intracapsular cataract extraction (ICCE), an older method in which the entire lens and capsule are removed. ICCE is rarely used today and has largely been replaced by phacoemulsification and ECCE.
| Technique | How it works | Best suited for | Incision & recovery |
|---|---|---|---|
| Phacoemulsification (phaco) | Ultrasound breaks up the lens; removed through a tiny incision. | Most routine cataracts. | Very small incision; fast recovery. |
| Laser-assisted (FLACS) | Laser performs key steps, then phaco removes the lens. | Cases that may benefit from added precision or astigmatism correction. | Very small incision; fast recovery. |
| Extracapsular (ECCE) | Lens removed in one piece through a larger incision; capsule kept. | Dense or advanced cataracts unsuitable for phaco. | Larger incision; longer recovery. |
| Intracapsular (ICCE) | Entire lens and capsule removed. | Rare cases, e.g. badly damaged lens support. | Large incision; longest recovery; seldom used. |
How Do I Know I Need Cataract Surgery?
You may be recommended cataract surgery when your vision has deteriorated to the point that it interferes with everyday activities such as reading, driving or watching television. If you’re unsure whether it’s the right time, learn more about when to see a cataract specialist.
In some cases, surgery may also be recommended even if cataracts are not the main cause of your vision problems. For example, removing the cloudy lens can allow your ophthalmologist to examine the back of your eye more clearly to monitor or treat conditions such as age-related macular degeneration (AMD) or diabetic retinopathy.
The decision to proceed with cataract surgery should be based on your symptoms, eye health and individual needs. Your ophthalmologist will discuss the potential benefits and risks of surgery and help you decide whether it is the most appropriate treatment for you.
If both eyes are affected, each eye is usually treated separately. The second eye is typically operated on after the first eye has healed sufficiently, although the exact timing varies depending on your recovery and your ophthalmologist’s recommendation.
How Do I Prepare for Cataract Surgery?
Preparing for your cataract surgery typically involves several steps to ensure a smooth procedure and optimal recovery. Here’s what to expect before your surgery:
- One week before your scheduled surgery, your cataract specialist will conduct various tests to assess the size and shape of your eye. These tests are essential in determining the most suitable artificial lens (an intraocular lens or IOL) for your specific needs.
- Your surgeon will then prescribe eye drops to safeguard your eye against potential infections. These drops are a vital part of the pre-operative care regimen.
- Make sure to provide your specialist with a comprehensive list of any medications you are currently taking. If any of these medications have the potential to cause bleeding during the surgery, your eye doctor might recommend discontinuing them temporarily.
- You will be instructed to abstain from eating or drinking for several hours before your surgery, typically the night before. This fasting period is crucial to ensure a smooth and safe procedure.
How Is Cataract Surgery Done?
Regardless of the type of cataract surgery you and your cataract specialists decide on, the overall process follows a similar pattern:
- Before the surgery, your eye specialist will conduct a thorough eye examination to assess the eye’s health and determine the appropriate surgical approach. You may also discuss options for intraocular lens implants, which can address issues like nearsightedness, farsightedness, or astigmatism.
- Local anaesthesia is administered to numb the eye, ensuring patients are comfortable and pain-free during the procedure. They’ll be awake but relaxed throughout the surgery.
- A small incision is made in the eye to access the cataract. Its size and location may vary depending on the chosen surgical technique.
- This is where the selected surgical technique comes into play. Whether it’s phacoemulsification, femtosecond laser-assisted cataract surgery, or extracapsular cataract extraction, the goal is to safely and effectively remove the cataract from the eye.
- If necessary, an artificial lens (IOL) will be inserted to replace the natural lens. The choice of IOL will have been discussed with the cataract specialist beforehand.
- The incision will then be carefully closed with tiny sutures or allowed to self-seal, depending on the technique used.
How Long Is Cataract Surgery?
Cataract surgery is typically a quick and efficient procedure. It takes approximately 10 to 20 minutes, depending on the severity of the condition. However, you may expect to spend a few hours at the eye specialist clinic to allow for pre-operative preparation and post-operative observation.
After the surgery, patients will be given specific instructions for post-operative care and follow-up appointments with their cataract specialist.
What to Expect During Recovery from Cataract Surgery
Most patients notice clearer vision within a few days of cataract surgery, with full recovery typically taking four to six weeks. In the first week, you may experience mild discomfort, light sensitivity, or a gritty sensation in the eye, all of which usually settle quickly.
Your eye doctor will prescribe antibiotic and anti-inflammatory eye drops to support healing and reduce the risk of infection.
During the recovery period, you should:
- Avoid rubbing or pressing on the operated eye.
- Wear the protective eye shield provided, especially when sleeping, for the first week.
- Avoid strenuous activity, heavy lifting, and swimming for at least two weeks.
- Attend all scheduled follow-up appointments so your surgeon can monitor healing.
If both eyes require surgery, the second procedure is usually scheduled around one month after the first. For a detailed week-by-week guide, read our full article on cataract surgery recovery.
Making the Right Choice
Living with cataracts can be challenging, especially as an older adult. That’s why, if you’re considering cataract surgery, make sure to choose a trusted eye specialist clinic so that they can determine the best approach for your unique needs. That way, you can achieve better vision and an optimal quality of life for years. Once you’ve decided on the surgery with your eye specialist, you can also check out our insight on cataract surgery recovery to learn more about how to care for your eyes after the surgery.
Medically Reviewed By
Dr Christopher Khng
Medical Director, Senior Consultant Ophthalmologist
MBBS, M.Med(Ophth), FRCS(Edin), AMS(Ophth 2003)
Dr Christopher Khng specialises in complex cataract surgery and anterior segment reconstruction, with particular expertise in iris reconstruction and the surgical management of aniridia. His clinical interests also include complex lens surgery, phacoemulsification and intraocular lens (IOL) technologies, refractive surgery, phakic IOLs (Implantable Collamer Lens, ICL), and small-incision cataract surgery performed under topical anaesthesia.
Dr Khng is a member of the Singapore Medical Association (SMA) and a Fellow of the American Academy of Ophthalmology (AAO), the American Society of Cataract and Refractive Surgery (ASCRS), and the European Society of Cataract and Refractive Surgeons (ESCRS). He is registered with the Singapore Medical Council (SMC) and the United Kingdom’s General Medical Council (GMC).
Last medically reviewed: 27 June 2026
Frequently Asked Questions
What is the difference between the three types of cataract surgery?
The three types differ mainly in how the clouded lens is removed. Phacoemulsification uses ultrasound to break up the lens and remove it through a tiny incision; extracapsular cataract extraction (ECCE) removes a denser lens in one piece through a larger incision; and intracapsular cataract extraction (ICCE) removes the entire lens with its capsule and is rarely used today.
Which type of cataract surgery is the most common?
Phacoemulsification is the most common type of cataract surgery today. Its very small incision, short procedure time and fast recovery make it the standard choice for most routine cataracts.
Is laser-assisted cataract surgery (FLACS) better than standard phacoemulsification?
Femtosecond laser-assisted cataract surgery (FLACS) automates some steps of phacoemulsification and can add precision, but it is not necessarily better for everyone. Standard phaco remains highly effective for most patients, and your surgeon will advise whether the laser offers any advantage in your case.
What is the difference between extracapsular (ECCE) and intracapsular (ICCE) cataract extraction?
In extracapsular cataract extraction, the cloudy lens is removed but the back of the lens capsule is left in place to support an artificial lens. In intracapsular cataract extraction, the entire lens and its capsule are removed — an older approach that is rarely used now.
Is cataract surgery the same as phacoemulsification?
Phacoemulsification is the most common type of cataract surgery, but not the only one. “Cataract surgery” is the general term for removing a clouded lens, while phacoemulsification refers specifically to the ultrasound technique used in most modern procedures.
How long does it take to recover from cataract surgery
Most patients see clearer vision within a few days and reach full recovery in four to six weeks. Mild discomfort and light sensitivity in the first week are normal and usually settle with prescribed eye drops.
What are the steps of a cataract surgery procedure?
Cataract surgery is performed under local anaesthesia and involves five main steps: pre-operative assessment and IOL selection, numbing the eye, creating a small incision in the cornea, removing the clouded lens using the chosen technique (phaco, FLACS, or ECCE), and inserting an artificial intraocular lens. The procedure takes around 10 to 20 minutes per eye.