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A Birds Eye View of Cataract and Its Treatment

What are cataracts?

Cataract is the most common cause of blindness in humans. It affects 8 in 10 Singaporeans aged 60 years old and above.

Cataract is a condition in which the clear lens of the eye becomes cloudy, reducing the amount of light entering the eye.

If left untreated, the condition can lead to a painless but gradual blurring of vision, reducing the quality of your life.

Symptoms of Cataract

If you suspect you have cataract, look out for the following symptoms:

  • Foggy, cloudy or hazy vision
  • Difficulty driving at night due to bright headlights
  • Trouble with glare from lamps or the sun
  • Double vision
  • Reduced perception of colours
  • Frequent change in spectacle prescription

Can cataract be treated?

If cataract is diagnosed at an earlier stage, it can be easily treated with cataract surgery and vision will be restored.

Cataract surgery is the only way to treat cataract. Medication or prescription glasses will not help.

What is the traditional cataract surgery process?

The cataract surgeon makes a corneal incision on the eye. An ultrasound probe enters to remove the cloudy lens (cataract). Ultrasound energy is then used to break up the cloudy lens (cataract). The remains are suctioned out of the eye with a small tube.

Next, an artificial intraocular lens (IOL) is inserted to replace the diseased lens. IOLs can correct myopia, hyperopia, astigmatism, and presbyopia. The type and power of the IOL implant is tailored to the patient.

Traditionally, manual phacoemulsification is used to perform the incisions. This has limited precision, with room for human error.

What is the new cataract surgery process?

Bladeless cataract surgery and computer-assisted cataract surgery are now available.

The cataract surgeon uses a laser machine to perform the various incisions. This gives greater consistency and control over the location, shape and size of the corneal incision and circular cut, making the procedure even safer.

With the help of the femtosecond laser, lesser ultrasound energy is needed to break up the cloudy lens (cataract), reducing the risks of injury and complications.

More precise incisions can also hold the implanted IOL well as the artificial lens implant is centralised and better positioned.

We provide various high-quality artificial lenses to suit each patient’s individual needs, such as aspheric monofocal lens, multifocal lens and toric lens. These new and improved intraocular lenses can help to correct all refractive errors of the eye, including myopia
(shortsightedness), astigmatism and presbyopia (Lao Hua).

Is cataract surgery safe?

Every year, more than 30,000 cataract operations are carried out in Singapore.

Cataract removal remains one of the safest and most effective day surgical procedures. The entire procedure is completed within 40 minutes.

How to recover faster after cataract surgery?

Patients who undergo the new cataract surgery generally recover faster as the bladeless technique is gentler on the eye, without any sharp instruments involved. Patients are able to achieve better quality of vision after recovery.

Any side effects of cataract surgery?

Cataract surgery is an extremely safe and effective procedure, in the hands of an experienced and skilled surgeon. Occasionally, clouding of the lens capsule that holds the lens in place, known as Posterior Capsule Opacification (PCO), may result in blurring of vision. This minor condition may be easily treated with a simple outpatient laser procedure called a YAG Laser Capsulotomy.

Get a clearer vision in life at Lang Eye Centre

Cataracts affect more than 80 per cent of Singaporeans over 60 years old. Cataracts that are more severe are more prone to complications and are more difficult and complicated to treat.

Dr Leonard Ang is an, experienced cataract surgeon who has a proven track record in cataract treatment, having successfully performed thousands of cataract surgeries. He specialises in refractive cataract surgery so that patients can also correct their myopia (shortsightedness), astigmatism and presbyopia (“lao hua”), and thereby achieve better vision with reduced reliance on spectacles for distance vision and reading.

To schedule an appointment, please call (65) 6684 1000 / (65) 9760 3020 or email

Eye Care Tips from Eye Specialists

Eye Care Tips from Eye Specialists

Diabetic Eye Screening and TreatmentWorking from home has become the new norm for everyone in these unprecedented times. There are some great changes that came out of this situation – no more jostling for seats on public transport during rush hour – you can simply work in the comforts of your own home.

But you may have also noticed some other not-so-great changes. Perhaps you’re less productive at home, or the blurring of boundaries between work and home is taking a toll on your health and eyes.

While you continue to work from home during Phase Two, we share some easy eye care tips from our eye specialist to help your eyes feel better.

Use appropriate lenses with the right prescription

Find yourself squinting to read the faraway signboard? Maybe it’s time to get a new pair of glasses. Prolonged squinting causes strain and discomfort to your eyes.

For children, squinting because the child is not wearing the correct prescription and is not seeing well has far more drastic effects. It may impair their eyesight and lead to lazy eyes (amblyopia) where the child is never able to see well. Prolonged near activity may also affect the growth of their eyeballs, leading to myopia (near sightedness) and its progression.

Wearing contact lenses? It’s vital to get the right fit. There are many types of contact lenses: soft lenses, rigid gas permeable lenses, and hybrid lenses.

For flexible and more comfortable wear, opt for soft lenses. To correct vision problems, choose rigid gas permeable lenses.

Everyone’s eyes are different. To achieve the best results for your eyes, consult your eye specialist for advice before choosing your contact lenses.

Take breaks in between work: Look up and look far

When your home becomes your office, it can feel like you’re always at work. Schedule breaks to relieve some stress off your eyes and relax at the same time. The 20-20-20 rule will help. After every 20 minutes of work, look at objects that are 20 feet (6m) away for 20 seconds.

As we shift to our work-from-home setup and become increasingly reliant on digital devices, it seems more impossible than ever to cut down our average daily screen time. To reduce eye strain when you’re on your digital devices, be mindful of the placement of your devices. The best angle is when the top of your screen lies slightly below eye level and is tilted a little upwards.

Reduce excessive near activity and spend more time outdoors

Prolonged near activities has been found to be associated with myopia (near sightedness) and its progression. Singapore has the highest prevalence of myopia in Asia. In Singapore, 20% of children are myopic at 7 years of age, at the start of primary education, with prevalence exceeding 70% upon completing college. Ten percent of Singaporeans high myopia (more than -6.0 dioptres).

The development of myopia and its progression is higher in the early years of life up till the eye reaches maturity at about 18 to 21 years of age. Spending more time outdoors instead of prolonged near activities have been shown to reduce the progression of myopia. It is good to reduce near activities such as playing games or browsing the internet on smartphones and tablets.  Therefore outdoor activities, exercises and games is not only beneficial to the eye, it also has other health benefits, like improving one’s health and wellbeing, as well as helping to reduce the risk of medical conditions.

Wear glasses with UV protection

A good pair of sunglasses isn’t just a stylish accessory – it protects your eyes from harmful ultraviolet (UV) radiation and provides optimal vision under bright sunlight.

UV rays damage the cells in our eyes which may contribute to the following eye diseases: cataracts, macular degeneration, and photokeratitis (sunburn of the eyes).

UV protection isn’t just limited to sunglasses. Clear glasses should also be equipped with effective UV protection to absorb harmful radiation and protect your eyes.

Have good lighting in your workspace

As you age, your eyes need more light to see better. For example, your eyes need 2 times as much light when you’re 60 as they did when you were 20.

Keep your windows clean and pull back your curtains to increase daylight in your home.

For reading or close work, use a direct light from a table lamp. The lamp should be properly positioned so the light is not reflected and causing glare.

Take a nap

Our weather gets unbearably hot at times, and it’s hard to resist dozing off in the heat, especially after a heavy lunch. Combat afternoon fatigue with a mid-afternoon nap. While sleeping, your eyes are continuously lubricated. Irritants, such as smoke and dust, are cleared out.

Try to elevate your head when you sleep as this reduces the bags and circles under your eyes due to improved blood flow. Never underestimate your sleeping position as we spend almost a third of our day snoozing. If you want to be free from eyebags and dark circles, you need to clock at least eight to nine hours of sleep.

Go for regular eye screening

Some Singaporeans might not be aware of the importance of regular eye screening. Having an eye screening will not just tell you if you need a change of prescription or new glasses – it’s also an important eye health check.

An eye specialist can detect many general health problems before you’re even aware of any symptoms. They can also spot early signs of eye conditions such as cataracts, glaucoma, or age-related macular degeneration. These problems can be treated if found early enough.

People who are older than 40 should have annual eye exams because their risk for eye diseases rises dramatically.

When was the last time you had an eye screening?  Book an appointment today at Lang Eye Centre. We are committed to providing high-quality eye care to help patients get the best outcomes for their eye condition.

What is iLASIK and Why is it Superior?

iLASIK Surgery

With the advancement of technology, LASIK surgery is now safer and easier to perform than ever before. This also led to newer variations of the procedure like the iLASIK surgery.

iLASIK surgery uses bladeless, wavefront-guided LASIK to correct myopia (short-sightedness), hyperopia (long-sightedness), astigmatism, and presbyopia. It offers greater precision and can also correct vision and unique imperfections of the eye which cannot be achieved by conventional LASIK surgery.

LASIK - The 100% customized procedureiLASIK - The 100% customized procedure.LASIK - The 100% customized procedure.


iLASIK Surgery Process

A custom 3-D map of the patient’s eye is created using Wavefront technology. These images are unique to every individual. Numbing eye drops are then given and a device holds the patient’s eyes open.

The IntraLase laser creates a thin flap in the cornea. Next, an excimer laser uses the information from the 3-D map to reshape the cornea. The flap is put back in place. Light can now focus better on the retina, which corrects the refractive error of the eye.

The entire process lasts about twenty minutes.

Benefits of iLASIK Surgery

iLASIK surgery is generally preferred over conventional LASIK surgery due to the following reasons.

  1. Greater precision with lower risks: In iLASIK surgery, the corneal incision and circular cut is created by the femtosecond laser, eliminating the usage of sharp surgical tools. This laser technique is more precise and gentler on the eye, thereby reducing the risk of injury and complications.
  1. Corrects vision and unique imperfections of the eye: The bladeless, wavefront-guided LASIK corrects high order aberrations, which cannot be achieved with conventional LASIK surgery. This precision technology can help patients achieve the best visual outcome.
  1. Shorter treatment time needed: The system provides clear 3D images of the patient’s eye in real time. The excimer laser will then use the information to make customised adjustments. With these fully customised images, the process can be completed within twenty minutes.
  1. Suitable for patients with thin corneas: Patients who naturally have thinner corneas can get better results as the laser utilises the 3-D map of the eye to make a more precise, thin corneal flap. This flap is much thinner compared to the flap that is made by surgical tools in conventional LASIK surgery.

Take the First Step Towards Better Vision With Our Eye Doctor in Singapore

At Lang Eye Centre, our eye doctor is specially trained to utilise the patented Intralase Method, which has an established track record for successful femtosecond laser flap creation. We are committed to providing you with the safest and best treatments that can lead to clearer vision in life. To schedule an appointment, please call (65) 6684 1000 / (65) 9760 3020 or email