What are OK lenses (Orthokeratology lenses)?

OK lenses are specially designed rigid contact lenses worn overnight to gently reshape the cornea so that clear vision can be achieved during the day without glasses or contact lenses.

How do OK lenses help control myopia?

Orthokeratology lenses change how light focuses on the retina and may help slow the progression of myopia in children and teenagers.

At what age can children start Ortho-K lenses?

Many children can start orthokeratology lenses from around 6 to 8 years old depending on their eye health and prescription.

When prescribed and monitored by an experienced eye specialist and used with proper hygiene, orthokeratology lenses are generally considered safe.

Do children still need glasses during the day with OK lenses?

Most patients who wear orthokeratology lenses overnight are able to see clearly during the day without glasses or contact lenses.

How often are follow-up visits needed for Ortho-K lenses?

Regular follow-up visits are important to check the lens fit and ensure the eyes remain healthy during orthokeratology treatment.

Posterior Capsule Opacification (PCO) Treatment Singapore

Posterior Capsule Opacification (PCO) After Cataract Surgery – Causes, Symptoms & Treatment in Singapore

What Is Posterior Capsule Opacification (PCO)?

Posterior Capsule Opacification (PCO), often called a secondary cataract, is a common condition that can occur months or years after cataract surgery. It happens when the back portion of the lens capsule becomes cloudy, causing vision to become blurry again.

Although cataract surgery replaces the cloudy lens, the natural capsule that holds the artificial lens remains. Over time, this capsule may thicken or develop haze, leading to symptoms similar to the original cataract.

Why Does Vision Become Blurry Again After Cataract Surgery?

If you’ve previously had cataract surgery and are noticing changes in your vision, PCO could be the cause.

Common reasons include:

Cell growth on the lens capsule after surgery
Natural healing response of the eye
Gradual clouding of the capsule over time

PCO is not a complication or failure of surgery — it is a known and treatable condition.

Symptoms of Posterior Capsule Opacification

Patients in Singapore who develop PCO often report:

Blurred or cloudy vision
Glare or halos around lights (especially at night)
Reduced contrast or dull colours
Difficulty reading or driving
Vision gradually worsening after initial improvement from cataract surgery

If you’re experiencing any of these symptoms, it’s important to have your eyes checked.

When Should You Get an Eye Check After Cataract Surgery?

You should consider an eye examination if:

Your vision is no longer as clear as after your surgery
You experience increasing glare or light sensitivity
It has been over a year since your last eye review
You rely on clear vision for driving or work

Regular eye check-ups help detect PCO early and ensure your vision remains optimal.

Effective Treatment: YAG Laser Capsulotomy

The good news is that PCO can be treated quickly and safely with a YAG laser capsulotomy.

What to expect:

A non-invasive, painless laser procedure
Takes only a few minutes
No cuts or stitches required
Immediate or rapid improvement in vision

This treatment creates a clear opening in the cloudy capsule, restoring vision almost instantly.

Is YAG Laser Treatment Safe?

Yes — YAG laser capsulotomy is widely used and considered very safe. It is performed in the clinic and does not require hospital admission.

Most patients experience:

Minimal discomfort
Fast recovery
Long-lasting results

Why Early Detection Matters

Delaying treatment may affect your daily activities and quality of life. Many patients assume their cataract has “come back,” but in reality, it is often PCO — a condition that can be easily treated.