Sub-100 Micron Customization
Sculpting an ultra-thin protective shield to protect the cornea's stronger outer layers.
LASIK
LASIK & Refractive Surgery
Thin Flap LASIK / SBK
Sub-100 micron Thin Flap LASIK (SBK) at Neera Eye Centre, Delhi — preserve stromal bed strength for thinner corneas.
<100 µm
Ultra-thin flap profile
90–95 µm
Typical SBK flap range
SBK
Sub-Bowman's technique
Safer bed
More residual stroma
Service Overview
If you have thinner corneal measurements, standard surgeries might use up too much tissue. Thin Flap LASIK / SBK solves this by keeping your surface flap under a sub-100 micron profile. Known clinically as Sub-Bowman's Keratomileusis (SBK), this procedure focuses on residual stromal bed optimization. It preserves your eye's natural mechanical strength, offering a highly reliable treatment track alongside Advanced LASIK, SMILE, CLEAR, and surface PRK alternatives.
What It Covers
Deep Tissue Saving
Maximizing the underlying treatment bed to let your surgeon correct high prescriptions safely.
Flapless Screening Sync
Checking structural numbers against SMILE and CLEAR parameters to choose the safest path.
Nerve Network Protection
Creating a shallow flap to limit nerve disruption and support natural tear production.
Structural Safety Audits
Post-op checks tracking eye wall thickness to ensure excellent ectasia protection.
Who It Is For
Borderline Thickness Profiles
Patients with thinner corneas who don't qualify for traditional thick flaps but want to avoid PRK.
Deep Correction Prescriptions
Nearsighted individuals requiring deep tissue reshaping to fix strong prescriptions safely.
Dry Eye Risk Controls
Candidates looking to protect surface nerve layers to avoid temporary post-operative dry eye.
How It Works
Layer Audit
High-resolution scans check your corneal layers to see whether SBK, SMILE, CLEAR, or PRK fits best.
Shallow Flap Cutting
Advanced laser settings are calibrated to separate a precise sub-100 micron tissue shield.
Flap Elevation
The ultra-thin layer is raised gently, keeping the underlying structural architecture perfectly intact.
Stromal Treatment Track
The cold excimer laser reshapes the inner tissue, utilizing the saved space safely.
Interface Closing
The thin flap is repositioned, smoothing down quickly and cleanly due to its minimal structural profile.
Why Choose Our Specialized SBK Department
Our facility features high-resolution micro-pachymetry tools configured for thin tissue management. Our surgeons are experts in Sub-Bowman's techniques, regularly generating uniform flaps between 90 and 95 microns. This focused technical setup allows us to treat higher prescriptions safely while preserving the eye's natural mechanical strength.
Frequently Asked Questions
What makes an SBK thin flap safer than a standard surgical flap?
SBK flaps are significantly thinner, leaving more deep corneal tissue untouched and maintaining better eye wall strength.
How does Thin Flap SBK compare to a flapless SMILE or CLEAR procedure?
Thin Flap SBK creates an ultra-shallow surface flap, while SMILE and CLEAR skip surface flaps entirely, extracting a lenticule instead.
When is PRK preferred over a Thin Flap SBK procedure?
PRK is selected if your cornea is too thin to safely accommodate even a 90-micron flap, treating the surface layer directly.
Not sure which treatment is right for you?
Book a comprehensive eye evaluation. Our specialists will recommend the best course of action for your vision.