At Stahl Vision, we have combined the experience of treating more than 50,000 LASIK patients with highly detailed measurements of the eye to develop CustomVision LASIK™—a proprietary and trademarked approach to custom LASIK eye surgery designed to deliver exceptional visual outcomes with an advanced focus on precision and safety.
A key component of achieving consistent results in modern LASIK surgery is the use of LASIK nomograms.
What Is a LASIK Nomogram?
A LASIK nomogram is a highly refined set of customized treatment formulas programmed into the laser before surgery. These formulas adjust the laser treatment to account for the unique characteristics of each patient’s eyes.
LASIK nomograms incorporate many variables, including:
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Your glasses or contact lens prescription
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Age and gender
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Astigmatism
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Corneal curvature and corneal shape
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The overall dimensions and optical system of your eye
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Surgeon-specific treatment data and outcomes
By analyzing these factors, the nomogram allows the surgeon to precisely calibrate the laser treatment for each individual patient. This level of customization is a critical factor in achieving predictable outcomes and maintaining the highest standards of LASIK safety.
At Stahl Vision, our proprietary Stahl Formula Nomogram has been refined through decades of experience and tens of thousands of procedures.
Using this advanced approach, we have been able to improve outcomes from the typical 90% of patients achieving 20/20 visionto over 99% of myopic patients achieving 20/20 vision, with more than 80% seeing better than 20/20.*
For many patients, this means vision that is even sharper than what they previously experienced with glasses or contact lenses, often with improved visual clarity and night vision.
Why Nomograms Matter for Custom LASIK
Not all LASIK centers use sophisticated nomograms. However, the most precise and safest LASIK treatments rely on detailed nomograms that are continuously refined based on real patient outcomes.
The best LASIK nomograms are built from:
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Years of surgical experience
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Tens of thousands of patient outcomes
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Advanced diagnostic technology
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Continuous analysis and improvement
At Stahl Vision, our custom LASIK nomograms are constantly refined to improve accuracy, predictability, and safety in laser eye surgery.
How We Develop Our Custom LASIK Nomograms
Creating highly accurate LASIK nomograms requires a combination of technology, data analysis, and surgical expertise.
Controlled Surgical Environment
We carefully control the temperature, humidity, and corneal hydration in the laser suite to maintain consistent surgical conditions. These environmental factors can influence laser precision and must be tightly managed to achieve the most accurate results.
Advanced Wavefront Measurements
We use advanced wavefront mapping technology to analyze the complete optical system of the eye. These measurements help detect tiny visual imperfections and allow us to create a highly individualized treatment plan for each patient.
Wavefront data is used both to design the treatment and to monitor and analyze outcomes after surgery, helping refine our nomograms over time.
Computer Modeling and Data Analysis
Using advanced computer modeling, we analyze numerous variables that affect LASIK outcomes, including:
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Age and gender differences
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Astigmatism patterns
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Corneal shape and thickness
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Eye length and optical dimensions
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Differences between wavefront measurements and traditional refraction
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Interactions between higher-order aberrations and standard vision errors such as nearsightedness and farsightedness
These calculations allow us to develop and refine our LASIK nomogram formulas.
Custom Treatment Software
To implement the nomogram for each patient, we use specialized software developed by Dr. Brian Stahl that creates a personalized treatment plan based on each patient’s measurements and visual goals.
Advanced Laser Technology
Even the best nomogram requires a highly precise laser system. At Stahl Vision, LASIK procedures are performed using the Wavelight Allegretto Wave® Eye-Q Excimer Laser, which includes high-speed eye tracking technology to maintain accuracy and enhance safety throughout the procedure.
Continuous Improvement
Developing world-class LASIK nomograms is an ongoing process. Every treatment and outcome provides additional data that allows us to refine and improve our formulas over time. Our commitment to constant analysis and improvement helps ensure that each generation of nomograms becomes even more precise.