As an increasingly popular choice for vision correction in recent years, ICL (Implantable Collamer Lens) surgery allows individuals to achieve crystal-clear vision without the need for glasses or the daily hassle of contact lenses.
However, during health checkups or medical examinations, patients are often instructed: “Please remove your contact lenses.”
This leaves many ICL patients wondering: “Since ICL is also an ‘intraocular contact lens,’ is it really okay to undergo these scans with the lens in my eye?”
In this article, we will explain in an easy-to-understand manner whether you can get CT scans and MRIs after ICL surgery, why you are asked to remove regular contact lenses, and key precautions to keep in mind.
What is ICL (Implantable Collamer Lens)?
ICL is a revolutionary vision correction surgery that does not involve reshaping the cornea. By inserting a microscopic, specialized lens inside the eye, it delivers clear vision just like your natural eyes.
Unlike LASIK, if an unexpected situation arises or if treatment for future eye conditions (such as cataracts) becomes necessary, the lens can be safely removed to restore your eye to its original state. This adaptability to future eye changes is a major advantage.
Furthermore, ICL lenses are made of a soft material called “Collamer” (containing HEMA and collagen). It offers exceptionally high biocompatibility and is engineered to remain safely inside the eye on a semi-permanent basis.
Why Are You Asked to “Remove Contact Lenses” During Scans?
In CT scans (cross-sectional X-ray imaging) and MRI scans (imaging using strong magnetic fields and radio waves), the presence of metal can adversely affect the procedure.
The main reasons for asking patients to remove contact lenses, particularly before an MRI, are:
- 1.Risk of Burns from Colored Contact Lenses
Pigments in some colored lenses contain metallic components such as titanium dioxide or iron oxide. These can react to the strong magnetic field, generate heat, and pose a risk of burning the eye.
- 2.Eye Dryness During the Scan
Scans require patients to lie still with their eyes closed for an extended period. Wearing standard contact lenses can cause severe eye dryness during this time.
Conclusion: Can You Get a CT or MRI After ICL Surgery?
In short: Yes, it is completely safe to undergo CT scans or MRI procedures after ICL surgery.
The reason is simple: Collamer, the material used in ICL lenses, contains zero metal components. Because it is completely metal-free, there is no risk of heating or image distortion caused by the magnetic field in an MRI. Similarly, X-rays used in CT scans have no impact on the lens.
Additionally, unlike regular contact lenses, ICL lenses are permanently positioned inside the eye, eliminating the risk of the lens drying out or getting stuck during the scan.
Helpful Tips for Your Appointment
While undergoing scans with an ICL is entirely safe, it is good practice to inform the doctor or radiologist prior to the test that you have had ICL (Implantable Collamer Lens) surgery for extra peace of mind.
On the medical questionnaire asking, “Do you have any metal in your body?”, you can confidently answer “No.” However, mentioning it when asked about “past eye surgeries” or “use of contact lenses” will help ensure a smooth process.
Summary
Rest assured, you can undergo detailed examinations like CT and MRI scans after ICL surgery without any issues.
Announcements instructing patients to “remove contact lenses” are primarily intended to prevent risks related to metallic elements in colored lenses and dryness from standard lenses. These do not apply to ICLs, which are metal-free and fixed inside the eye.
If you feel anxious, simply let the staff know before your scan that you have an ICL. Enjoy a comfortable life with clear vision while keeping both your eyes and overall health fully protected.