- Medically Reviewed by Mr Mfazo Hove Consultant Ophthalmologist
- Author: Chris Dunnington
- Published: July 2, 2025
Laser eye surgery has transformed the lives of millions, offering freedom from glasses and contact lenses. SMILE Pro, the latest evolution in minimally invasive laser vision correction, is at the forefront of this revolution. At Blue Fin Vision® Eye Clinic, our top-rated Harley Street team of leading surgeons and specialists in London are committed to delivering the best possible outcomes with SMILE Pro. However, as with any surgical procedure, it is essential to understand both the risks and contraindications before making an informed decision.
Understanding SMILE Pro Laser Eye Surgery
SMILE Pro (Small Incision Lenticule Extraction) is an advanced laser eye surgery technique designed to correct short-sightedness (myopia) and astigmatism. Unlike traditional LASIK, SMILE Pro does not require a large corneal flap. Instead, a femtosecond laser creates a small, lens-shaped piece of tissue (lenticule) within the cornea, which is then removed through a tiny keyhole incision. This minimally invasive approach preserves more of the corneal structure and typically results in a faster, more comfortable recovery.
Risks of SMILE Pro Laser Eye Surgery
While SMILE Pro is considered one of the safest and most effective forms of laser vision correction, no surgical procedure is entirely without risk. At Blue Fin Vision®, we believe in full transparency and patient education, so you can make a confident, informed choice.
- Incomplete Lenticule Extraction
In a small percentage of cases, the lenticule may be difficult to extract or may not come out in one piece. This can lead to blurry or unstable vision. If this occurs, a secondary procedure may be required to remove residual tissue or to convert to another laser technique. Such events are rare and are managed by our experienced surgeons using advanced technology. - Infection or Severe Corneal Damage
The risk of significant sight loss due to infection or severe corneal damage is extremely low—about 1 in 10,000 cases. Our Harley Street eye clinic adheres to the highest standards of sterility and safety to minimise this risk. - Corneal Ectasia (Corneal Weakening/Bulging)
Very rarely (approximately 1 in 2,000 cases), the cornea can become structurally weakened after laser surgery, leading to a condition called corneal ectasia. This is why comprehensive pre-operative screening is essential. At Blue Fin Vision®, we use advanced corneal mapping to exclude patients at risk, ensuring only suitable candidates proceed to surgery. - Over- or Under-Correction
Individual healing responses vary, and there is a possibility that your vision may not be fully corrected after one treatment. Some patients may require a minor enhancement procedure, or may still need thin glasses for certain tasks. - Visual Disturbances (Glare, Halos, Starbursts)
It is common to experience glare, halos, or starbursts around lights in the early weeks after SMILE Pro. For most patients, these symptoms improve as the eyes heal and adapt. Persistent or severe disturbances are rare, and our top doctors will discuss your individual risk profile during your assessment. - Dry Eye Symptoms
SMILE Pro is associated with a lower risk of dry eye compared to LASIK, as fewer corneal nerves are affected. However, some patients may still experience temporary dryness, which usually resolves with lubricating drops. - Other Rare Complications
Other potential risks include corneal haze, inflammation, or transient increases in eye pressure. These are generally rare and are closely monitored and managed by our leading surgeons.
Contraindications to SMILE Pro
Not everyone is a suitable candidate for SMILE Pro laser eye surgery. At Blue Fin Vision®, our top-rated specialists in London conduct thorough assessments to ensure your safety and the best possible visual outcomes.
Absolute Contraindications:
- Unstable Prescription: If your glasses or contact lens prescription has changed significantly within the past year, you may not be eligible.
- Corneal Disorders: Conditions such as keratoconus, corneal scarring, or abnormal corneal thickness exclude patients from SMILE Pro.
- Severe Dry Eye Disease: Significant ocular surface disease may increase the risk of complications.
- Pregnancy or Breastfeeding: Hormonal changes can affect corneal stability and healing, so surgery is deferred until after this period.
- Autoimmune Disorders: Conditions such as lupus or rheumatoid arthritis may impair healing and increase the risk of complications.
- Active Eye Infections or Inflammation: Any current infection or inflammation must be fully treated before considering surgery.
- Previous Herpetic Eye Disease: A history of herpes simplex keratitis can increase the risk of reactivation after laser surgery.
- Unrealistic Expectations: Patients must understand the benefits and limitations of SMILE Pro and have realistic goals for their vision.
Relative Contraindications:
- Thin Corneas: If your corneas are thinner than required for safe treatment, alternative procedures may be recommended.
- Large Pupils: Patients with very large pupils may be at higher risk of night vision disturbances.
- Systemic Health Conditions: Poorly controlled diabetes or other systemic diseases may affect healing.
Every patient at Blue Fin Vision® receives a bespoke assessment by our top specialists, ensuring that only those who are likely to benefit safely from SMILE Pro are offered the procedure.
The Blue Fin Vision® Approach: Safety, Expertise, and Personalised Care
Our Harley Street eye clinic is recognised as one of the best in London for laser eye surgery. We pride ourselves on:
- World-Class Expertise: Our leading surgeons and top doctors are among the most experienced in the UK, with a track record of outstanding results in SMILE Pro and other advanced laser vision correction techniques.
- Advanced Technology: We use the latest diagnostic and surgical platforms, ensuring maximum precision and safety at every stage.
- Personalised Care: Every patient receives a thorough, individualised assessment and a clear, honest discussion of risks, benefits, and alternatives.
- Comprehensive Aftercare: Our commitment to your vision extends beyond surgery, with attentive follow-up and support throughout your recovery.
Why Choose Blue Fin Vision® for Your SMILE Pro Laser Eye Surgery?
Choosing the right eye clinic is crucial for your safety and satisfaction. At Blue Fin Vision®, we combine the expertise of top-rated surgeons, cutting-edge technology, and a compassionate, patient-centred approach. Our Harley Street location in London is synonymous with clinical excellence and the highest standards of care.
Take the Next Step with Confidence
If you are considering SMILE Pro laser eye surgery, trust your vision to the top specialists at Blue Fin Vision® Eye Clinic. Book your comprehensive consultation at our Harley Street, London clinic and discover how our leading surgeons can help you achieve clear, natural vision with the assurance of expert care.
Your vision deserves the best – entrust it to the team at Blue Fin Vision®, where safety, expertise, and personalised attention are our promise to every patient. Contact us today to begin your journey to visual freedom.
