What is Clear Lens Extraction?

Clear Lens Extraction (CLE) – also called Refractive Lens Exchange (RLE) – is a vision correction procedure where the eye’s natural lens is replaced with an artificial intraocular lens before cataracts develop, to reduce dependence on glasses or contact lenses.

Key fact:
Because the natural lens is replaced, cataracts cannot develop later in life.

What is PRELEX?

PRELEX (Presbyopic Lens Exchange) is Clear Lens Extraction performed specifically to treat presbyopia, the age-related loss of near focus – it is lens replacement surgery designed to reduce the need for reading glasses.

CLE, RLE & PRELEX are commonly considered by patients over 40 who want both distance and reading vision corrected in one procedure.

What Vision Problems Can CLE, RLE or PRELEX Treat?

CLE, RLE & PRELEX can correct:

• Myopia (short-sightedness)
• Hyperopia (long-sightedness)
• Astigmatism
• Presbyopia
• Mixed refractive errors

It is often recommended for patients who:

• Are unsuitable for laser eye surgery
• Have high prescriptions
• Want a permanent vision solution
• Are developing reading-vision problems

How CLE, RLE or PRELEX Works

The procedure uses the same techniques as modern cataract surgery, one of the safest and most successful operations worldwide.

→ The natural lens is removed through a small incision

→ A customised intraocular lens (IOL) is implanted

→ The new lens permanently focuses light onto the retina

Types of Intraocular Lenses Used

Your lens choice determines your visual outcome.

• Monofocal lenses – Provide sharp vision at one distance, usually for driving or distance vision.
• Extended Depth of Focus (EDOF) lenses – Offer a continuous range of vision with fewer visual disturbances.
• Multifocal lenses – Designed to improve both distance and reading vision.
• Toric lenses – Correct astigmatism

Your surgeon will recommend the best option after detailed eye measurements and lifestyle discussion.

Benefits of CLE, RLE or PRELEX

• Reduced reliance on glasses or contact lenses
• Correction of multiple vision problems simultaneously
• Long-term visual stability
• No future cataract surgery required
• Customisable vision outcomes

For many patients 40 and over, CLE, RLE or PRELEX can be both a vision correction procedure and a preventative step against cataracts.

Who is a Good Candidate?

You may be suitable if you:

• Are over 40 and noticing reading vision decline
• Are not suitable for laser vision correction
• Want a long-term solution rather than temporary correction
• Have high prescriptions or complex refractive errors

A comprehensive assessment is required to determine suitability.

Frequently Asked Questions (FAQ)

Is Clear Lens Extraction the same as cataract surgery?

Yes — the surgical technique is the same.
The difference is that Clear Lens Extraction is performed before cataracts develop, for vision correction rather than cataract removal.

Is PRELEX different from Clear Lens Extraction?

No. PRELEX is simply Clear Lens Extraction performed specifically to treat presbyopia and reduce the need for reading glasses.

Will I still need glasses after PRELEX?

Some patients achieve near-complete independence from glasses, while others may still use them occasionally for fine print or specialised tasks.
Your outcome depends largely on the lens selected.

How long do the results last?

The implanted lens does not age or become cloudy. Results are generally permanent.

Is Clear Lens Extraction safe?

It uses the same techniques as modern cataract surgery, which has an excellent safety profile.
Suitability and risk are assessed individually during consultation.

Considering Lens-Based Vision Correction?

Laser surgery is not the only path to visual freedom.
For many patients – particularly over 40 – Clear/Refractive Lens Extraction or PRELEX can provide a more comprehensive and long-lasting solution.

A personalised assessment at Hunter Street Eye Specialists can determine whether lens-based vision correction is right for you.