ICL surgery and LASIK are both popular vision correction procedures, but they work in different ways. LASIK reshapes the cornea using a laser, while ICL involves implanting a lens inside the eye. Each option has its own advantages and disadvantages, recovery times and suitability criteria depending on your prescription and eye health.
At Vision Clinic Sydney, we offer both ICL and LASIK surgery as part of our range of vision correction treatments. Choosing between them is not always straightforward, and the right answer depends on your individual eye anatomy, prescription and lifestyle. This article explains how each procedure works, how they compare and what to consider when making your decision.
What is the Difference Between ICL and LASIK?
LASIK uses a laser to permanently reshape the cornea so that light focuses correctly on the retina. ICL, or Implantable Collamer Lens surgery, involves placing a synthetic lens inside the eye, between the iris and the natural lens, without removing any corneal tissue. Both procedures aim to improve vision and reduce a patient’s dependence on glasses or contact lenses, but through fundamentally different means.
What Is ICL?
ICL stands for Implantable Collamer Lens. The procedure involves surgically placing a small, biocompatible lens between the iris (the coloured part of the eye) and the natural crystalline lens. The implanted lens works alongside the eye’s existing structures to correct refractive errors, including myopia (short-sightedness), hyperopia (long-sightedness) and astigmatism.
ICL is particularly well suited to patients who are not eligible for LASIK, including those with high prescriptions or thinner-than-average corneas. Key benefits of ICL include:
- Reversible: The lens can be removed or replaced if circumstances change
- No corneal tissue is removed: The eye’s natural structure remains intact
- Suitable for high prescriptions: Effective for myopia that falls outside the LASIK treatment range
What Is LASIK Eye Surgery?
LASIK (Laser-Assisted In Situ Keratomileusis) uses an excimer laser to precisely reshape the corneal tissue, changing how the eye focuses light onto the retina. A thin flap is created on the corneal surface, the underlying tissue is reshaped, and the flap is repositioned. The change to the cornea is permanent. Key benefits of LASIK include:
- Quick procedure: Typically completed in under 15 minutes per eye
- Widely performed: Decades of clinical data support its safety and efficacy
- Visual recovery: Most patients notice improved vision within 24 to 48 hours
ICL vs LASIK: Key Differences
| Feature | ICL Surgery | LASIK |
|---|---|---|
| Procedure type | Lens implant | Laser reshaping of cornea |
| Reversibility | Yes | No |
| Suitable for thin corneas | Yes | No |
| Suitable for high prescriptions | Yes | Limited |
| Recovery time | Several days to weeks | 24 to 48 hours |
| Dry eye risk | Lower | Higher |
| Corneal tissue affected | No | Yes |
ICL vs LASIK: Which Choice?
There is no single answer, as it depends on factors such as your prescription and corneal thickness.
ICL may be the better choice if you:
- Have a high degree of myopia beyond the typical LASIK treatment range
- Have thin corneas that make LASIK unsuitable
- Have been told you are not a LASIK candidate
- Prefer a procedure that is reversible
- Experience significant dry eye
LASIK may be the better choice if you:
- Have suitable corneal thickness and a stable prescription
- Have mild to moderate refractive error within the LASIK treatment range
- Prefer a faster and slightly simpler recovery
- Are not keen on an implanted device
A comprehensive consultation and pre-operative assessment with Dr Kumar is essential in determining your eligibility for these procedures.
What to Expect from each Procedure?
ICL Procedure
ICL surgery is performed under topical or local anaesthetic as a day procedure. A small incision is made in the eye, and the folded lens is inserted and positioned between the iris and the natural lens. The procedure typically takes 20 to 30 minutes per eye. Most patients go home the same day and attend a follow-up appointment the next morning.
LASIK Procedure
LASIK is also performed as a day procedure under a topical anaesthetic. A thin flap is created on the corneal surface using a femtosecond laser, the underlying tissue is reshaped with an excimer laser, and the flap is repositioned. The procedure typically takes under 15 minutes per eye. Following the procedure, patients typically begin to notice an improvement in their vision, although experiences can vary.
Risks and Side Effects of ICL vs LASIK
Both procedures carry a small risk of complications, and a thorough pre-operative assessment helps minimise individual risk.
ICL risks and side effects:
- Temporary increase in intraocular pressure following surgery
- Risk of infection (rare with current surgical protocols)
- Possibility of cataract development over time (extremely rare)
- Halos or glare around lights, particularly in low light
- Incorrect lens sizing requiring adjustment
LASIK risks and side effects:
- Dry eye syndrome, particularly in the months following surgery
- Halos, glare or starbursts around lights
- Under- or over-correction requiring enhancement
- Flap-related complications (rare with the use of femtosecond lasers)
- Regression of correction over time, particularly with higher prescriptions
Recovery Process: ICL vs LASIK
ICL Recovery
As ICL involves making a small incision within the eye, the initial recovery is slightly longer than with LASIK. Most patients notice an improvement in their vision within 24 to 48 hours, but it may take longer for the eye to fully settle around the implanted lens.
Day of surgery: Vision may be hazy or blurry; rest at home is recommended
24 to 48 hours: Most patients typically notice an improvement in their vision; a follow-up appointment is typically scheduled for the morning after surgery
First week: Light sensitivity and mild visual fluctuations are common; avoid rubbing the eye
One to two weeks: Most patients typically return to desk work and driving; strenuous activity should still be avoided
One month: You can usually return to contact sports, swimming and more intense exercise.
Several weeks: Full visual stabilisation as the eye adjusts to the implanted lens
LASIK Recovery
LASIK recovery is typically faster, as the procedure reshapes the surface of the cornea rather than inserting a lens inside the eye. This generally results in a more straightforward healing process for most patients.
Day of surgery: Vision may be blurry, and eyes may water; rest and dim lighting are recommended
24 to 48 hours: Most patients typically notice that their vision has improved; many return to desk work at this point
First week: Mild dryness, light sensitivity and occasional fluctuations in clarity are normal
One week: Most patients can typically resume driving and normal daily activities
One month: Contact sports and swimming are usually safe to return to
Three to six months: Over this period, vision typically becomes more stable
How To Book an Assessment
To request an appointment or if you have an enquiry, please contact us via the following ways:
Call or message us: +612 9222 9188
Email us: reception@visionclinicsydney.com.au
Book online via our website
FAQs
Which is riskier, ICL or LASIK?
Both procedures have a low risk of serious complications when performed on suitable candidates. ICL is slightly more complex, as it involves placing a lens inside the eye, while LASIK carries a higher risk of dry eye and flap-related issues. Overall risk varies depending on your eye anatomy, general eye health and your surgeon’s experience.
Is ICL cheaper than LASIK?
ICL surgery is generally more expensive than LASIK because it involves placing a customised lens inside the eye. The exact cost depends on your prescription and individual treatment plan, which will be discussed during your consultation.
What is the best age for LASIK?
There isn’t a single “best” age for LASIK, but most patients are suitable once their vision has stabilised, typically from their early 20s onwards. Appropriate timing depends on your prescription, eye health and long-term vision goals. Patients under 25 may still be experiencing changes to their refractive error, and those over 40 may begin to be affected by presbyopia.
What age is best for ICL surgery?
ICL surgery is usually recommended for adults whose vision has stabilised, often in their 20s to 40s. Suitability depends more on your prescription and eye health than age alone, so a personalised assessment is essential.
