Overview
A cataract is when the clear lens inside your eye slowly becomes cloudy, like looking through a foggy window. It happens naturally as we get older. This guide explains the signs to look out for, when surgery is needed, and how to choose a good eye doctor to help you see clearly again.
Dr Bobby Cheng
Senior Consultant Ophthalmologist & Retina Specialist
With over 20 years of clinical experience and advanced fellowship training, Dr Bobby Cheng specialises in complex cataract surgeries, personalised intraocular lens (IOL) implants, and comprehensive eye care at Cornerstone Eye & Retina Centre in Singapore.
Introduction
Good eyesight helps us stay independent and safe every day. But many people over 50 slowly start to notice their sight is not as sharp as before. Road signs look blurry, and bright lights seem to have a glow or ring around them.
These are common signs of a cataract, where the lens inside the eye turns cloudy over time. Seeing an eye doctor early is the first step. The doctor can tell you how far the cataract has grown and what to do next. Whether your problem is small or more serious, getting advice early helps protect your sight, safety, and independence.
When Should You See an Eye Doctor?
Cataracts grow slowly, so many people do not notice them at first. You might find you need more light to read, or that you cannot see well on cloudy days. It is a good idea to see a doctor once your eyesight starts to get in the way of daily life, work or hobbies.
For drivers, glare from oncoming car headlights at night is a common warning sign. If your glasses no longer help, or you keep needing new ones, it is worth having your eyes checked.
Seeing a doctor early means the progression of the cataract can be monitored and treated before it affects your safety.
Early Signs You Shouldn't Ignore
Small changes in your sight are worth paying attention to. Common signs of a cataract include:
- Trouble with bright light - Sunlight or indoor lights may feel harsh or uncomfortable.
- Faded or yellowish colours - White things may look dull or a little yellow.
- Double vision in one eye - You may see a "ghost" or double image, even with one eye closed.
If your sight changes suddenly or quickly, see a doctor soon to make sure nothing else is wrong at the back of your eye.
Do All Cataracts Need Surgery?
Having a cataract does not always mean you need surgery right away. In the early stages, the cloudiness may be mild and not bother you much. Dr Bobby Cheng may suggest simple steps first, such as updating your glasses, using brighter reading lights or wearing anti-glare sunglasses outdoors.
Surgery is usually considered when these steps no longer help. If you begin to experience difficulty in your everyday tasks such as cooking, reading your phone or going safely down stairs, it may be time to consider an operation. The choice is personal and depends on your daily life and how much the cataract is affecting you.
How to Choose the Right Eye Doctor
Choosing the right doctor matters. Look for a senior eye surgeon with plenty of experience in cataract surgery. Dr Bobby Cheng is a specialist (UK fellowship trained) with over twenty years of experience in Singapore and he focuses on matching care to each patient's needs and way of life.
It also helps to pick a clinic that is convenient and accessible, since you will need a few follow-up visits. Finally, make sure the clinic team can advise you on MediSave and insurance, so the costs are easier to understand and you know if there are any out of pocket expenses to expect.
Comparing Your Options
The table below shows the two main paths, in simple terms:
Choosing Your New Lens
During cataract surgery, the cloudy lens is replaced with a clear artificial lens (called an intraocular lens or IOL). There are a few types to choose from. The right one depends on your lifestyle, budget, and how much you would like to reduce your need for glasses. Dr Bobby Cheng will guide you in your decision making.
Most people's eyes adjust to a new lens within 3 to 6 months, as the brain adapts. This natural adjustment is called neuroadaptation.
There is no single "best" lens for everyone. The right choice depends on what matters most to you, whether that is spectacle freedom such as seeing without glasses, driving comfortably at night or keeping things simple.
Most insurance and MediSave cover the standard monofocal (non-toric) lens. Premium lenses, such as multifocal, trifocal, EDOF, or toric lenses, may incur some out of pocket cost. Our clinic team will be happy to go through the details and help you plan before you decide.
Recovery: Looking After Your Eye
If you have surgery, recovery is usually simple, but you must follow the doctor's advice carefully. Most operations are done as day surgery, so you go home the same day. You will be given eye drops (antibiotic and anti-inflammatory) to use for a few weeks to prevent infection and inflammation.
In the first week or so, avoid heavy lifting, hard exercise, and water getting into the eye. Wearing an eye shield at night stops you from rubbing the eye in your sleep. Most people notice clearer sight within a few days and slowly return to their normal routine.
Your Path to Clearer Vision
Treating a cataract is an important step in staying active and independent. Working with an experienced eye doctor means you get a clear check up and a plan that suits you. Blurry sight need not stop you doing the things you enjoy.
If you or a family member is noticing the signs of cataracts, book an appointment with Dr Bobby Cheng today.
Take the Next Step for Your Vision
Don't let cloudy vision hold you back from the activities you love. Schedule a thorough cataract assessment with our specialist today.
Frequently Asked Questions
What is the difference between the lens types?
A monofocal gives clear sight at one distance, so you will still need reading glasses for close work. A multifocal or trifocal helps you see near, middle, and far, so as to reduce your reliance on spectacles. An EDOF gives smooth vision across two focusing views, with fewer night time glare effects than a multifocal lens. Dr Bobby Cheng will advise you in your decision making.
Can a cataract come back after surgery?
No. Once the cloudy lens is removed, the cataract cannot return. But sometimes, months or years later, the thin "bag" that holds the new lens can turn cloudy. This is called posterior capsule opacification, and it is easily fixed in the clinic with a quick, painless laser. It is not the cataract growing back.
How long does the operation take?
The surgery itself usually takes about 15 to 30 minutes for each eye. You do not need to stay overnight. In total, expect to be at the centre for about four to six hours, which includes registration, eye drops, preparation, and a short rest before you go home.
Does the operation hurt?
Most people feel little or no pain. Numbing eye drops are put in first, and you may be given something mild to help you relax. You might feel a little pressure during the operation, but pain is rare. Any slight grittiness afterwards can be eased with eye drops.
Will MediSave or insurance help pay for it?
Yes. Cataract surgery is treated as medically necessary in Singapore and can usually be claimed through MediSave and MediShield Life, within the limits set by the Ministry of Health. If you have an Integrated Shield Plan or company insurance, the cost may also be covered. Our clinic team can check your coverage and help you plan before the operation.