SILK vs SMILE vs LASIK – Advanced Vision Correction

SILK Eye Surgery by ELITA

In the evolving landscape of vision correction, SILK, SMILE, and LASIK represent significant milestones. 

However, SILK eye surgery, based on a cutting-edge technology developed by Johnson & Johnson, stands out for its advanced features and superior outcomes, offering a compelling alternative to both SMILE, created by Zeiss, and the traditional LASIK procedure.

Difference between SILK, SMILE and LASIK Procedures for Specs Removal

The main difference between SILK, SMILE and other Laser (LASIK) procedures is that SILK eye surgery offers the highest quality of vision, 24 hours recovery and extreme safety as compared to others.

ManufacturerJohnson & JohnsonZeissVarious
TechniqueFlapless, less invasiveLenticule extractionInvolves creating a corneal flap
Laser Energy LevelUltra-low, 60 nanojoulesHigher, 150 nanojoulesVariable
Collateral Tissue DamageReduced due to lower energyMore due to higher energyDepends on technique
Spot SeparationBridgeless, smoother dissectionAbout 4 microns, more tissue manipulationN/A
Lenticule DesignBiconvex, enhancing vision and reducing dry eyesFlatN/A
Vision QualityUp to 6/5 vision, focuses on visual axis (natural axis)Standard 6/6 vision, focuses on pupillary axisStandard 6/6 vision, focuses on pupillary axis
Dry Eye IncidenceReduced, gentler on corneal nervesLessHigher, due to flap creation
Cyclotorsion CompensationIncluded, adjusts for eye rotationNot includedNot included
Depth of FocusPreserved, smooth transition between focal pointsLess optimal, can have transition lagLess optimal, can have transition lag
Recovery TimeRapid, typically within 24 hoursLonger, around one weekAdvised rest for about 7 days
Suitability for Active LifestylesMore suitable, no flap-related risksSuitable for active lifestyleLess suitable, risks with high-contact activities
Post-Surgery ComfortEnhanced, due to reduced dry eye symptomsLess comfortableLess comfortable, longer recovery, potential for dry eyes
Halos and GlareHighly rare, due to advanced technologyMore common, particularly in low-light conditionsMore common, particularly in low-light conditions


Both of them are innovative lenticule extraction technologies, but SILK introduces several advancements enhancing its performance over SMILE.

Below are some of the areas in which SILK is significantly different from SMILE:

  1. Ultra-Low Energy Laser: SILK operates at a mere 60 nanojoules compared to SMILE’s 150 nanojoules, reducing collateral tissue damage and promoting faster visual recovery.
  2. Bridgeless Spot Separation: SILK’s unique separation method results in smoother lenticule dissection, less swelling, and inflammation, enhancing recovery.
  3. Biconvex Lenticule Design: This design in SILK improves vision quality, accelerates nerve regeneration, and reduces dry eye symptoms.
  4. Cyclotorsion Compensation: SILK corrects eye rotation changes, a feature that is absent in SMILE, reducing the risk of residual astigmatism.
  5. Visual Axis Treatment: SILK aligns treatment with the visual axis, unlike SMILE’s focus on the pupillary axis, ensuring more natural and effective vision correction.
  6. Rapid Recovery Time: SILK patients typically experience a recovery time of just 24 hours, significantly shorter than the one-week period associated with SMILE.


SILK not only surpasses SMILE but also revolutionizes the field over the traditional LASIK procedure:

  1. Flapless Technique: SILK’s approach eliminates the risks associated with LASIK’s corneal flap, making it safer for individuals in contact-intensive activities.
  2. Superior Vision Quality: Achieving up to 6/5 vision, SILK surpasses LASIK’s 6/6 standard by focusing on the visual axis.
  3. Reduced Dry Eye Incidence: The biconvex lenticule design in SILK is gentler on corneal nerves, leading to a lower incidence of dry eyes post-surgery.
  4. Cyclotorsion Compensation: SILK’s inclusion of this feature ensures higher accuracy in cylinder correction.
  5. Preserved Depth of Focus: The unique design in SILK maintains depth of focus, ensuring a smooth transition across different focal points.

Advantages of SILK Over SMILE and LASIK

SILK offers numerous advantages over both SMILE and LASIK:

  • Enhanced Safety: The flapless and low-energy approach of SILK significantly reduces surgical risks.
  • Rapid Recovery: SILK enables patients to resume normal activities within 24 hours, a stark contrast to the longer recovery times of SMILE and LASIK.
  • Superior Visual Outcomes: With advanced technology focusing on the visual axis, SILK offers clearer, sharper vision.
  • Reduced Side Effects: SILK’s approach minimizes common post-surgical issues like dry eyes, halos, and glare.

Conclusion based on Our Experience

In our experience, SILK emerges as the clear leader in the realm of vision correction, surpassing SMILE and LASIK in safety, efficacy, and recovery.

Its advanced technology and patient-centric design make it an ideal choice for those seeking superior visual outcomes and a quick return to daily life.

For individuals considering vision correction, SILK represents not just a procedure but a pathway to enhanced vision and lifestyle, setting a new standard in the field.