A Clearer View of the World
ICL - A Cornea-Preserving Solution for Nearsightedness and Astigmatism
If you are among those struggling with nearsightedness and searching for a safe solution to achieve crisp, high-definition vision, we would like to introduce the Implantable Collamer Lens (ICL), an innovative technology designed to help you overcome visual limitations and rediscover the world with exceptional sharpness and clarity.
“Many patients may not be suitable candidates for LASIK or SMILE Pro due to thin corneas or high refractive errors that exceed the safe limits of laser corneal reshaping. However, do not lose hope. ICL offers a highly effective, minimally invasive alternative.”
This remark reflects the genuine care of Dr. Thitima Wangcharoen, an ophthalmologist specializing in cornea and refractive surgery, who will guide us through a comprehensive exploration of this innovative technology.
ICL: A New Frontier in Vision Correction When LASIK and SMILE Pro Fall Short
When it comes to vision correction, laser-based procedures, such as traditional LASIK and widely adopted innovations like SMILE Pro, are often the first options that come to mind. However, today, an alternative approach, such as ICL, is gaining increasing recognition and widespread popularity.
Dr. Thitima explained, “ICL has made inroads into clinical practice for many years. However, next-generation lens technologies continue to evolve. Additionally, the U.S. Food and Drug Administration (FDA) has expanded the approved age range for ICL implantation from 21 - 45 years old to 21 - 60 years old. As a result, ICL has gained wider international acceptance and is now able to address the needs of a broader range of patients with refractive errors.”
What Is an Implantable Collamer Lens (ICL)?
In simple terms, an ICL is a “custom-designed implantable lens”. During the procedure, an ophthalmologist places this ultra-thin lens inside the eye, positioning it just in front of the natural lens and discreetly behind the iris. The lens precisely refracts light onto the retina, delivering high-definition vision with exceptional clarity and depth while reducing nighttime glare or halos.
“For patients with mild to moderate myopia, laser vision correction can be highly effective.” Dr. Thitima explained.
“However, in individuals with high myopia, typically those exceeding 800 to 1,000 degrees, or in those with concurrent astigmatism, procedures such as LASIK or SMILE may be restricted by safety considerations. Laser vision correction reshapes the cornea by permanently removing tissue. The higher the degree of myopia, the more corneal tissue removal is required. On the contrary, ICL entirely preserves the corneal natural structure and biomechanical strength.”
ICL lenses are for lifelong use without degradation. One of their key advantages is reversibility. As patients naturally develop age-related cataracts, the ICL can be safely removed during cataract surgery, allowing both procedures to be performed seamlessly in the same sitting.
ICL (Implantable Collamer Lens) vs. Laser Vision Correction (LASIK / SMILE Pro)
Who Are Suitable Candidates for ICL?
Not every patient is an ideal candidate for laser vision correction, and ICL is also not for everyone. Based on Dr. Thitima’s clinical experience, ICL implantation is particularly well-suited for the following groups:
- Patients with high myopia (typically greater than -8.00 diopters or in the -10.00 range and above), where corneal thickness may be insufficient for safe laser removal. In such cases, ICL often delivers superior visual clarity and quality.
- Patients with corneal limitations or contraindications to laser procedures, including thin corneas, irregular corneal curvature, or those at risk of keratoconus.
- Patients who prefer a reversible solution, as ICL is safely removable or exchangeable if needed.
- Patients with residual or recurrent myopia following LASIK or SMILE Pro, especially when repeat laser treatment is not feasible due to limited corneal thickness. With stable refraction and thorough evaluation, ICL offers an effective way to restore visual sharpness.
Safe, Seamless, and Stress-Free: Your Ultimate Guide to ICL
For many people, the idea of “implanting a lens inside the eye” naturally raises concerns: Will the body reject it? Will it feel uncomfortable, like a persistent sensation of a foreign body in the eye? To address these concerns, Dr. Thitima reassures us that:
The ICL is exceptionally soft and highly pliable, allowing it to be folded into a minuscule size and gently inserted through a small incision of approximately 3 millimeters at the corneal edge. Once inside the eye, the lens gradually unfolds and precisely seats into its intended position. Patients remain awake throughout the procedure yet experience no pain. After implantation, there is no sensation of a foreign body in the eye. Even at close range, the lens is completely invisible to the naked eye.
“The ICL is crafted from a proprietary material known as Collamer, a unique fusion of collagen and a hydrophilic polymer. It is highly biocompatible, allowing it to integrate naturally with the eye without triggering an immune or foreign body response, while providing built-in UV protection.”
Innovative Design Minimizes the Risk of Cataracts and Glaucoma.
Earlier generations of ICL technology were associated with a risk of premature cataract or angle-closure glaucoma because the lens could restrict space inside the eye and disrupt the natural flow of aqueous humor. Today, however, patients can feel more reassured.
“The latest ICL design features a microscopic central pore (CentraFLOW), which allows aqueous humor to circulate naturally from the back to the front of the eye. It significantly reduces the risk of cataract and angle-closure glaucoma.” Dr. Thitima emphasizes.
The material and design of ICL continue to advance, minimizing known risks, including cataracts and glaucoma. Notably, recent advancements have also expanded to accommodate individuals with presbyopia (age-related farsightedness). However, the most critical factor remains attending regular follow-up appointments with an ophthalmologist. It allows the doctor to utilize specialized diagnostic equipment to monitor your progress and closely safeguard your long-term ocular health.
Postoperative Care for Lasting Visual Freedom
One of the key advantages of ICL is its fast recovery. The small 3-millimeter incision is self-sealing and requires no sutures, allowing most patients to resume normal activities, including work and screen use, within 1 – 2 days.
To ensure optimal outcomes, careful adherence to postoperative guidelines during the first month is essential:
- Avoid strenuous activity, heavy lifting, weight training, and high-impact exercise for one month to prevent lens displacement.
- Refrain from swimming and avoid exposure to water. Keep water and sweat out of the eyes during the first month to prevent infection.
- Ease back into light exercise, such as brisk walking, which can typically resume after the first two weeks.
Why Choose ICL Surgery at a Top-Tier Hospital?
ICL implantation requires not only the advanced skill of an experienced ophthalmologist but also the precision of world-class technology. At MedPark’s Eye Care Center, we do not view ICL as merely a vision correction; we are committed to delivering meticulous, personalized, and highly safe care for every patient’s eyes.
“Given the unique dimensions and anatomical nuances of each eye, a comprehensive preoperative assessment is paramount.” Dr. Thitima emphasizes.
Before implantation, each eye is carefully scanned and evaluated through a comprehensive series of advanced diagnostic tests, including:
- Pentacam: a 3D corneal and anterior segment imaging system that evaluates corneal curvature, thickness, anterior chamber depth, and ocular dimensions.
- Anterior Segment OCT: a high-resolution cross-sectional imaging modality that precisely measures the available space for lens implantation at the micron level.
- UBM (Ultrasound Biomicroscopy): a high-frequency ultrasound technology that allows ophthalmologists to visualize structures behind the iris.
- Endothelial Cell Count: an assessment of corneal endothelial cell density to ensure the eye is in optimal condition to accommodate the implantable lens safely.
- IOLMaster 700 and VERION: advanced systems that accurately measure ocular dimensions, refractive axis, and lens positioning, with integrated data connectivity to surgical devices for enhanced precision in the operating room.
At MedPark Hospital, we equip the operating room with an integrated Digital Marking system, an intelligent navigation technology that enables precise positioning and axis alignment of the ICL. It is especially beneficial in patients with astigmatism, delivering superior accuracy and reducing the likelihood of rotational misalignment.
How to Prepare for ICL Implantation
For those considering this advanced vision correction, the most crucial first step is preoperative assessment. You should:
- Discontinue contact lens wear at least 5–7 days before your appointment.
- Arrange transportation on the day of your examination, as pupil dilation is required. This results in temporary blurred vision and increased light sensitivity for approximately 4 – 6 hours.
“Once the assessment is complete, the ICL will be ordered. The waiting time depends on each patient’s unique eye anatomy and refractive profile. If the required lens is in stock, surgery can proceed immediately. If it is available in the inventory in Switzerland, delivery typically takes 1–2 weeks. For patients whose specifications do not match any preexisting lenses, a custom-made ICL will be specially manufactured on a case-by-case basis. This process may take approximately three months to ensure the lens is tailored precisely to the patient’s eye,” explained Dr. Thitima.
While the eye is inherently complex, the procedure itself is minimally invasive and quicker than many expect. Once completed, there is no need for an overnight stay. Patients can return home the same day to rest and prepare to embrace a new chapter in life with clearer, sharper vision than ever before.
ICL (Implantable Collamer Lens) is a medical breakthrough that overcomes the limitations of conventional refractive procedures such as LASIK and SMILE Pro, restoring visual freedom without irreversibly altering the cornea. Step into a new era of high-definition vision. Schedule your eye screening and consultation with our experienced ophthalmologists at the Eye Care Center, MedPark Hospital.