What Happens During Cataract Surgery? A Step by Step Guide
- Clear Insights
- Jul 14
- 10 min read
Guide 2.1
Suitable for: Adults aged 50 years and above | Family members | Caregivers
If you’ve been told you have cataracts, it’s natural to wonder what cataract surgery involves. This guide explains what happens before, during and immediately after the procedure, helping you understand what to expect and prepare for your consultation with confidence.
Is This Guide Right for Me?
This guide is for you if:
You’ve been diagnosed with cataracts.
Your doctor has mentioned cataract surgery as a treatment option.
You’re unsure what happens during the procedure.
You’d like to understand the treatment journey before making a decision.
You’re helping a loved one prepare for cataract surgery.
What Should I Do Next?
If... | Consider... |
Your cataracts are mild and not affecting your daily activities | Continue regular follow up with your eye doctor and monitor your vision. |
Your vision is affecting reading, driving or everyday tasks | Discuss whether cataract surgery may be appropriate for your individual situation. |
You’ve already decided to proceed with surgery | Learn how to prepare before your procedure and understand the recovery process. |
What You’ll Learn
After reading this guide, you’ll understand:
Why cataract surgery is performed.
What happens before the procedure.
What to expect on the day of surgery.
How the cloudy lens is replaced.
What happens immediately after surgery.
Introduction
Hearing the words “you need cataract surgery” can understandably feel overwhelming, especially if you’ve never had eye surgery before. Many patients have questions about what actually happens during the procedure, how long it takes and whether they will be awake.
The good news is that cataract surgery is a well established procedure that follows a structured process. Understanding each step can help reduce uncertainty and make it easier to discuss your options with your ophthalmologist.
This guide explains the typical cataract surgery journey. While every patient is different, the information below provides an overview of what many people can expect before, during and immediately after surgery.
01 Why Is Cataract Surgery Performed?
The purpose of cataract surgery is to remove the cloudy natural lens that is affecting your vision.
As cataracts develop, the lens gradually becomes less transparent, making it more difficult for light to pass clearly into the eye. This can lead to blurred vision, increased glare, reduced contrast and difficulty performing everyday activities such as reading or driving.
Unlike glasses, which correct refractive errors, cataract surgery addresses the clouding within the lens itself. Whether surgery is appropriate depends on several factors, including how much your symptoms affect your daily life, your overall eye health and your personal visual needs.
Your ophthalmologist will discuss these factors with you before recommending any treatment.
02 Before Surgery: Your Pre Operative Assessment
Before cataract surgery is considered, your ophthalmologist will perform a comprehensive assessment to understand your eye health and determine whether surgery is appropriate.
This assessment typically includes:
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Your doctor will also review your medical history, current medications and any previous eye conditions or surgery that may influence your treatment plan.
This appointment is also an opportunity to discuss your expectations, ask questions and understand the different lens options that may be suitable for your individual circumstances.
03 Choosing Your Intraocular Lens (IOL)
During cataract surgery, the cloudy natural lens is replaced with an artificial intraocular lens, commonly known as an IOL.
There are different types of IOLs available, and the most appropriate choice depends on your lifestyle, visual requirements and eye health.
Your ophthalmologist may discuss options such as:
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Each type has potential benefits and considerations. Your doctor will explain which options are suitable for your eyes and help you make an informed decision.
A separate guide explores lens options in greater detail.
04 Preparing for Surgery
Once you’ve decided to proceed, your clinic will provide instructions to help you prepare for your surgery.
These may include:
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Following these instructions helps ensure the procedure proceeds as smoothly as possible.
05 Arriving at the Hospital
Most cataract procedures are performed as day surgery, meaning you can usually return home on the same day unless your doctor advises otherwise.
When you arrive at the hospital or surgical centre, the nursing team will:
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Although it’s natural to feel nervous, your surgical team will guide you through each stage and explain what to expect before you enter the operating theatre.
06 What Happens During Cataract Surgery?When it’s time for your procedure, you’ll be brought into the operating theatre where the surgical team will confirm your identity, the eye being treated and your planned procedure. Before surgery begins, your eye will be cleaned and prepared using sterile techniques to help reduce the risk of infection. A sterile drape is then placed around the eye, leaving only the treatment area exposed. Although this may sound intimidating, the surgical team will explain each step and help you feel as comfortable as possible throughout the procedure. |
07 Will I Be Awake During Cataract Surgery?
One of the most common questions patients ask is whether they will be awake during surgery.
In many cases, cataract surgery is performed using local anaesthesia, usually in the form of anaesthetic eye drops. Some patients may also receive medication to help them feel relaxed, depending on their individual circumstances and the advice of their ophthalmologist.
Because the eye is numbed, most people should not experience pain during the procedure. You may still notice bright lights, colours or movement, but this is normal and your surgical team will continue to guide you throughout the operation.
Your ophthalmologist will discuss the most appropriate anaesthetic approach for you before surgery.
08 How Long Does Cataract Surgery Take?
Many patients are surprised that the surgical procedure itself is relatively short.
However, the total time spent at the hospital is usually longer because it includes:
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Your healthcare team will explain what to expect on the day of your procedure.
09 Will I Feel Any Pain?This is often the biggest concern for patients. Because local anaesthesia is commonly used, most patients should not experience pain during the procedure itself. You may notice gentle pressure, bright lights or movement while the surgery is taking place. If you feel uncomfortable at any stage, let your surgical team know. They will guide you throughout the procedure and take appropriate steps to keep you comfortable. Individual experiences vary, and your ophthalmologist will explain what you can reasonably expect based on your individual circumstances. |
10 What Happens Immediately After Surgery?
After your procedure, you’ll be taken to a recovery area where the nursing team will monitor you before you return home.
Before you leave, you’ll usually receive:
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Most cataract procedures are performed as day surgery, so many patients are able to return home on the same day, provided their doctor considers it appropriate.
From Dr Seow Wei Hong
“Many people assume that blurry vision is simply part of getting older. While cataracts are common, similar symptoms can also be caused by other eye conditions. A comprehensive eye assessment helps us identify the underlying cause and discuss the most appropriate next steps based on your individual needs.”
Key Takeaways
Cataract surgery involves removing the cloudy natural lens and replacing it with an artificial intraocular lens.
The procedure is commonly performed as day surgery.
Local anaesthesia is commonly used to help keep patients comfortable during the operation.
Your ophthalmologist will recommend the most appropriate surgical approach and lens based on your individual needs.
Before going home, you’ll receive instructions on eye care, medications and follow up appointments.
Recovering After Cataract Surgery
Recovery begins as soon as the procedure is completed. While every patient’s experience is different, many people notice gradual improvements in their vision over the days and weeks that follow.
It is important to remember that recovery takes time. Your eye needs an opportunity to heal, and your vision may continue to stabilise during the weeks after surgery.
Your ophthalmologist will explain what is expected for your individual situation and provide instructions to support your recovery.
Looking After Your Eye
Before leaving the hospital, you’ll receive guidance on caring for your eye at home.
This may include:
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Following these instructions helps your ophthalmologist monitor your recovery and address any concerns promptly.
Returning to Everyday Activities
Many people are able to resume light daily activities soon after surgery, although the timing varies between individuals.
Your ophthalmologist will advise when it is appropriate to return to activities such as:
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Rather than comparing your recovery with someone else’s, follow the advice given by your treating ophthalmologist, as recovery recommendations are tailored to your individual circumstances.
When Should You Contact Your Doctor?Most people recover without significant problems. However, it is important to know when to seek medical advice. Contact your ophthalmologist promptly if you experience: Increasing eye pain. Sudden worsening of vision. Persistent redness that becomes worse rather than better. Increasing sensitivity to light. New flashes of light or a sudden increase in floaters. Any symptoms that concern you after surgery. These symptoms do not necessarily indicate a serious problem, but they should be assessed by your treating team. |
Questions You May Wish to Ask Your Doctor
Preparing questions before your consultation can help you better understand your treatment and recovery.
You may wish to ask:
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Having these discussions helps ensure you understand your treatment plan and know what to expect throughout your recovery.
Frequently Asked Questions
How long does cataract surgery take?
In the early stages, cataracts may not require surgery. Some people find that updating their glasses prescription or improving lighting helps them continue with daily activities. Your ophthalmologist will advise whether monitoring or treatment is appropriate based on how your vision affects your daily life.
Will I stay overnight in hospital?
Many cataract procedures are performed as day surgery, allowing patients to return home on the same day if appropriate. Your ophthalmologist will advise what applies to your individual circumstances.
Will I be awake during surgery?
Many patients receive local anaesthesia, commonly in the form of anaesthetic eye drops. Your ophthalmologist will explain the anaesthetic approach recommended for you.
Will I feel pain during the operation?
Most patients should not experience pain during the procedure itself because the eye is numbed. You may notice light, colours or gentle pressure. If you are uncomfortable, let your surgical team know.
Can both eyes be operated on at the same time?
Whether one or both eyes are treated depends on your individual circumstances and your ophthalmologist’s recommendation. Your treatment plan will be discussed during your consultation.
Will I still need glasses after cataract surgery?
Some people continue to wear glasses for certain activities after surgery. This depends on the type of intraocular lens used, your eye health and your visual needs.
How long does recovery take?
Recovery varies between individuals. Your ophthalmologist will monitor your healing during follow up appointments and advise when you can resume different activities.
What happens if I move during surgery?
Patients are guided throughout the procedure, and the surgical team will explain what to expect. If you need assistance or feel uncomfortable, let the team know during the operation.
What if I am nervous about surgery?
Feeling anxious is common. Discuss your concerns with your ophthalmologist before surgery. Understanding the procedure often helps patients feel more prepared and reassured.
When should I contact the clinic after surgery?
If you develop increasing pain, worsening vision, persistent redness or any unexpected symptoms, contact your treating team promptly for advice.
Continue Your Cataract Journey
Understanding the procedure is only one part of your treatment journey. These guides explain what happens before and after surgery to help you prepare with confidence.
Understanding Cataract Surgery Costs in SingaporeLearn about surgery costs, MediSave eligibility, insurance claims and available payment options. | |
Preparing for Cataract SurgeryUnderstand what happens before surgery, how to prepare and what to expect on the day of your procedure. | |
Recovering After Cataract SurgeryLearn about the recovery process, follow up appointments and returning to your normal daily activities. | |
Choosing the Right Intraocular LensCompare different lens options and learn how your ophthalmologist recommends the most appropriate choice based on your eye health and lifestyle. | |
Helping a Loved One Through Cataract SurgeryPractical guidance for family members and caregivers supporting someone before and after cataract treatment. |
Medical References
This guide has been prepared using current clinical knowledge and is intended for educational purposes. It should not replace a consultation with an ophthalmologist or other qualified healthcare professional.
The final published version should include references from authoritative sources such as: Ministry of Health Singapore (MOH) American Academy of Ophthalmology (AAO) Royal College of Ophthalmologists Peer reviewed ophthalmology literature relevant to cataract diagnosis and management |
All clinical content should be reviewed and approved by the medical team at The Straits Eye Centre before publication.
In Summary
If you only remember three things from this guide, remember these:
Early cataracts often develop gradually and may first appear as blurred vision, glare or faded colours.
Similar symptoms can also be caused by other eye conditions, so a comprehensive eye assessment is the best way to determine the cause.
If your vision changes are affecting your daily activities or causing concern, it’s appropriate to arrange an eye assessment rather than relying on symptoms alone.
→ Next Step
If you’ve noticed gradual changes in your vision or are wondering whether cataracts may be affecting your eyesight, arranging a comprehensive eye assessment is an appropriate next step. An examination can help identify the cause of your symptoms, determine whether cataracts are present and discuss the management options that may be suitable for your individual needs.
Concerned About Your Vision?Our ophthalmologists and Primary Eye Care Physicians provide comprehensive eye assessments to determine whether cataracts or another eye condition may be affecting your vision. | Your assessment may include:
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