Precision in ICL Surgery: ABSolu® UBM & AI-Powered ICLguru
ICL surgery is becoming a preferred refractive solution for patients who seek superior-quality, reversible vision correction without affecting the cornea.
This precision starts with imaging. By pairing the ABSolu® UBM platform with ICLguru (REVAI)—developed under the leadership of Dr. Roger Zaldivar—clinicians gain a modern, data-driven approach that significantly elevates safety, predictability, and personalization in ICL sizing.

Why Traditional Measurements Are No Longer Enough
Historically, ICL sizing has relied on White-to-White (WTW) corneal diameter and Anterior Chamber Depth (ACD). While convenient, these external measurements correlate weakly with the ciliary sulcus, the actual anatomical location where the ICL must be positioned.
This mismatch can lead to:
- Low vault → Risk of anterior subcapsular cataract
- High vault → Risk of angle narrowing or elevated IOP
- Unpredictable rotation or decentration
- Need for surgical exchange or retouch procedures
As the refractive field moves toward personalization and data-driven care, depending on external surrogates like WTW has become insufficient for achieving consistently optimal results.
ABSolu® UBM: Direct Access to the Sulcus-to-Sulcus (STS)
The ABSolu® 50 MHz Linear Probe Ultrasound Biomicroscope (UBM) addresses the limitations of optical devices by directly imaging the entire anterior segment, including the Sulcus-to-Sulcus (STS) diameter. This internal measurement is far more predictive of vault behavior and allows surgeons to build a precise understanding of each eye’s anatomy.
Why STS matters:
- Represents the real internal diameter supporting the Implantable Collamer Lens
- Strong correlation with postoperative vault
- Reveals anatomical variations and pathology (e.g., Plateau iris and sulcus colpase, ciliary body cysts, tumors, etc.)
- Provides reliable, reproducible measurements across operators
ABSolu®’s high-resolution imaging forms the anatomical foundation of an accurate ICL planning strategy.
For surgeons wishing to refine their UBM technique, we invite you to read our detailed guide on how to perform a superior-quality UBM exam.

ICLguru: AI-Powered Planning Built on Dr. Roger Zaldivar’s Vision
While imaging provides critical data, converting complex biometric relationships into a reliable sizing recommendation requires advanced analytics. This is the role of ICLguru, an AI-powered platform built on years of clinical research led by Dr. Roger Zaldivar.
ICLguru enhances the workflow by delivering:
- Automated ICL sizing based on STS measurements: ICLguru processes sulcus-to-sulcus (STS) information— such as that acquired with ABSolu® UBM — alongside other anterior segment metrics to provide a personalized lens size recommendation.
- Advanced vault prediction modeling: The platform integrates biometric relationships identified through Dr. Roger Zaldivar’s clinical research, helping predict postoperative vault more reliably than traditional methods.
- Decision support backed by clinical expertise: Rather than relying solely on external metrics like white-to-white and mathematical nomograms, ICLguru incorporates internal ocular anatomy, following Dr. Zaldivar’s approach that emphasizes true anatomical personalization.
- Consistency and reproducibility: By standardizing the calculation process, AI-Powered ICLguru reduces variability between operators or clinics, ensuring that sizing decisions are based on information rather than subjective interpretation.
- A streamlined, intuitive experience: Designed by a surgeon for surgeons, the platform simplifies what used to be a complex chain of calculations. It saves time, supports workflow efficiency, and enhances confidence in lens selection.
By replacing manual estimations with intelligent automation, ICL Guru standardizes the planning process and increases confidence in lens selection.
ABSolu® + ICLguru: A Natural Synergy for Predictability
ABSolu® provides anatomically accurate STS measurements, which ICLguru uses as high-quality input for its AI algorithms. Together, they create a powerful and modern ICL planning ecosystem that delivers:
- More accurate vault predictions
- Fewer postoperative surprises
- Enhanced workflow efficiency
- A greater level of personalization for every patient
This combination embodies a shift toward precision-driven refractive surgery.
DICOM Integration: Security, Traceability & Interoperability
ABSolu® UBM offers full DICOM compatibility, enabling seamless integration within the clinic’s digital workflow.
Benefits of DICOM in ICL planning:
- Traceability → every measurement and image is stored with data
- Auditability → pre- and postop pictures can be compared over time
- Interoperability → smooth export to PACS and ICLguru
- Security → adherence to international standards for patient data protection
This ensures that every step of the ICL planning process is transparent, verified, and secure.
Clinical Impact: More Predictable Outcomes, Fewer Postoperative Surprises
Choosing GURU export option* on ABSolu® UBM helps surgeons achieve:
Improved vault predictability
Direct STS imaging and AI-driven sizing reduce the risk of low or high vaults.
Fewer complications
Better sizing helps avoid:
- cataract formation,
- elevated IOP,
- angle narrowing,
- Implantable Collamer Lens rotation or exchange.
Higher patient satisfaction
Patients benefit from more stable outcomes and personalized care.
Increased surgical confidence
With standardized data and AI support, physicians can rely on an evidence-based workflow instead of estimation.
1️⃣ A Modern Workflow for ICL Centers
2️⃣ Preoperative refractive evaluation
3️⃣ High-resolution UBM imaging with ABSolu®
- STS measurement acquisition
- Anterior segment screening
4️⃣ DICOM export to clinic systems and ICL Guru
5️⃣ AI-powered ICL sizing recommendation
6️⃣ Surgical implantation
7️⃣ Postoperative vault assessment and follow-up
This workflow enhances precision while supporting clinic efficiency and communication.
Conclusion: The Present of ICL Planning Is Data-Driven
By combining ultra-high-resolution imaging with intelligent automation, ABSolu® UBM and GURU export option* redefine what is possible in modern ICL surgery. Clinics gain:
- more predictable outcomes,
- fewer complications,
- improved patient experience,
- and stronger positioning in a competitive refractive landscape.
ABSolu® UBM + ICL Guru: the new standard of precision for ICL sizing
If you would like to learn more or request a demonstration on ABSolu® ultrasound platform, the Lumibird Medical team is here to support your transition into the next generation of refractive surgery planning.
*DISCLAIMER: Quantel Medical, by Lumibird Medical, is only ICL GURU compatible, and the goal is only to send files to REVAI platform for ICL calculation. The images sent to REVAI platform have to be checked and validated by the user before sending. Quantel Medical, by Lumibird Medical, cannot decide of the correct images sent to REVAI platform for ICL calculation. Quantel Medical, by Lumibird Medical, cannot be held responsible in case of ICL miscalculation.