LaserVue Eye Center is proud to be the first facility in Northern California to offer the latest FDA-approved excimer laser: Bausch + Lomb TENEO™!
TENEO: The Latest Excimer Laser for LASIK
Purpose-built to transform refractive surgery. The Bausch + Lomb TENEO™ Excimer Laser is an extension of brilliance, pushing the needle forward in laser vision correction technology.
TENEO™ is the first new excimer laser to be approved for LASIK and refractive eye surgery 17 years. Approved for the treatment of myopia and myopic astigmatism, the TENEO™ laser takes LASIK and PRK to a new level of excellence for the first time in nearly 2 decades.
This revolutionary laser is renowned for having a very compact footprint and high speed, with a fast ablation (reshaping) time of about 1.2 seconds per diopter.
With a streamlined design featuring an internal nomogram, your eye surgeon can program your treatment directly from manifest refraction without manual or external adjustments needed.
First New Excimer Laser in Over a Decade
- First new excimer laser in the U.S. in 17 years
- 3D eye tracking on X, Y, and Z axis
- Fastest eye tracker available: 1,740 Hz (vs. 500 Hz)
- Fastest laser: Treatment time of ~1.2 seconds per diopter
- Approved for up to -10 D of myopia and up to -3 D of astigmatism
How is The TENEO Laser Different?
The technological advancements offered by TENEO allow for highly precise and adaptable eye measurements, along with built-in safety monitoring. Designed to enhance predictability and improve precision, TENEO supports the consistent outcomes of our expert eye surgeons during your treatment.
TENEO Benefits
TENEO represents a major evolution of the Technolas excimer-laser platform, combining a faster 500-Hz laser with a substantially faster 1,740-Hz tracking system and newer treatment software.
Here are just some of the reasons that the TENEO Laser stands out from other excimer lasers.
97.8% of eyes achieved 20/25 vision or better without glasses at nine months in the TENEO clinical trial study.
98.1% of patients reported being satisfied with their vision after surgery, compared with 27.7% before surgery, according to the patient-reported outcome questionnaire used in the clinical trial.
At 9 months post-operative, 34.8% of eyes gained one or more lines of CDVA.
Study results showed statistically significant improvement in contrast sensitivity, both with and without glare, compared to pre-op.
By reducing steps in the process of calculation and data entry, the TENEO excimer laser platofrm is designed to make treatment more predictable, while reducing opportunities for transcription or calculation errors. TENEO simplifies the path from your measured prescription to your laser vision correction.
Advanced Rotational Eye Tracking
An eye tracker that monitors your eye 1,740 times per second — more than three times faster than the laser itself — helps the laser continuously account for natural eye movements during treatment.
The laser does not simply pause when your eye moves. Instead, the TENEO laser’s tracking system can dynamically adjust the position of the treatment pattern to compensate for subtle eye movements.
Advanced rotational tracking helps account for subtle eye rotation during surgery, an important consideration when treating astigmatism because even a small rotational change can affect the alignment of the cylinder correction.
High-Speed Treatment Time
TENEO delivers laser treatment at 500 pulses per second, making the actual corneal reshaping portion of treatment extremely brief. Bausch + Lomb specifies approximately 1.2 seconds per diopter for a standard 6-mm optical-zone myopic treatment.
While the overall LASIK procedure involves preparation, flap creation, laser treatment, and flap repositioning, the actual excimer ablation is completed very rapidly.
Bring Life Into Focus with LaserVue Eye Center
Over the past 30+ years, LaserVue Eye Center has helped over 25,000 people in Northern California and around the world to gain freedom from refractive errors, providing the most advanced vision correction solutions available.
We are results-driven, with the experience and technology to back up our pledge. We herald an excellent record of successful procedures, satisfied patients, and outstanding results.
“Each person has unique eye care needs. I believe in taking the time to get to know their individual vision needs and goals. When we get to know each patient, and meet or exceed their expectations … That is the true measure of success.” — Jay Bansal, MD, Medical Director
Additional Information
Here is some additional information to learn about the TENEO excimer laser, for the techies 😊
Clinical Trial Methods & Outcomes
The FDA pivotal study of the Bausch + Lomb TENEO involved:
- 168 patients (333 eyes)
- 10 U.S. clinical sites
- No surgeon nomogram adjustments
- Manifest refraction entered into the system
- PROSCAN aspheric algorithm
Key findings from the TENEO trial:
- Nine months after surgery, 97.8% of eyes achieved uncorrected distance visual acuity and corrected distance visual acuity of 20/25 or better. Refractive outcomes remained stable throughout the nine-month follow-up period.
- The mean manifest refraction spherical equivalent improved from -5.67±2.52 D preoperatively to -0.04±0.32 D postoperatively. 92.7% of eyes reached residual refractive error within ±0.50 D.
- Patient satisfaction with their vision increased from 27.7% preoperatively to 98.1% after surgery, according to the results of the PROWL questionnaire in the clinical trial.
“These results clearly demonstrate that the TENEO platform is a safe and effective option for the correction of myopia and myopic astigmatism, delivering outstanding, consistent visual and refractive outcomes. . . Having performed the first TENEO commercial cases in the United States shortly after it received FDA approval, I can confirm that my experience in clinic thus far mirrors what we experienced in the study.” – Lead Author, George Waring IV, MD.
PROSCAN Aspheric Treatment Technology
Conventional myopic ablation tends to alter corneal asphericity and can, in rare cases, induce positive spherical aberration. TENEO’s PROSCAN algorithm attempts to anticipate and minimize this occurrence. The PROSCAN algorithm calculates the expected amount of surgically induced spherical aberration and compensates in real time to maintain the cornea’s natural aspheric shape.
The PROSCAN aspheric population-based algorithm allows your surgeon to distribute tissue removal to preserve an ideal corneal aspheric profile.
When discussing the TENEO laser with your eye doctor, you may here the phrase “approximately 1.2 seconds per diopter.” This is not a universal treatment time number. This number is based on population-average K and Q values, rather than using each patient’s individually measured preoperative K and Q values. In action, TENEO offers real time tracking technology to incorporate your unique corneal shape into the ablation calculation.
PROSCAN is based on the subjective refractive error of each unique eye. The PROSCAN aspheric ablation profile 1.40 US software is designed to treat myopia with and without astigmatism.
Here are the considerations for use of the TECHNOLAS TENEO 317 excimer laser system with PROSCAN software:
- For the reduction or elimination of myopic astigmatism up to -10.00 D MRSE, with sphere between -1.00 D to -10.00 D and cylinder between 0.00 and -3.00 D;
- in patients with documented evidence of a change in manifest refraction of less than 0.50 D (in both cylinder and sphere components) for at least one year prior to the date of the pre-operative examination;
- and in patients who are 22 years of age or older.
Faster Calculation & Eye Tracking
TENEO was engineered around a modern, streamlined surgical workflow, reducing unnecessary steps between entering a patient’s prescription and beginning treatment.
TENEO represents a major evolution of the Technolas excimer-laser platform, combining a faster 500-Hz laser with a substantially faster 1,740-Hz tracking system and newer treatment software.
The former model of the laser, the Technolas 217z, provided 100-Hz laser repetition. In sharp contrast, the TENEO 317 offers 500-Hz laser repetition. While the Technolas 217z provides a 240-Hz eye tracker, TENEO boasts a significantly faster 1,740-Hz eye tracker.
The laser firing at 500-Hz means the tracker samples the eye approximately 3.48 times for every laser pulse.
That’s not merely a faster camera. The architecture allows the system to continuously reassess the eye position between laser pulses, and dynamically update where the next pulse should go.
The higher tracking frequency provides multiple measurements between laser pulses, allowing the system to estimate eye movement and update the treatment trajectory before subsequent pulses are delivered.
This new excimer laser represents a major evolution of the Technolas platform architecture, with substantially faster laser delivery and tracking plus a new aspheric treatment algorithm.
The high-speed treatment afforded by the TENEO excimer laser combines with with high-speed eye tracking. The system isn’t simply firing faster. It is simultaneously delivering laser treatment while monitoring eye position at a substantially higher frequency.
TENEO’s pulse-placement strategy is designed to control how frequently adjacent areas of cornea receive laser energy, helping manage localized heat accumulation during the rapid 500-Hz treatment.
The result is a highly controlled method of building the desired corneal shape from thousands of microscopic laser pulses.
Sophisticated Pulse Delivery
TENEO’s laser software strategically distributes laser pulses across the cornea, designed to control how frequently adjacent areas of cornea receive laser energy. This helps our expert eye surgeons manage localized heat accumulation during the rapid 500-Hz treatment.
The result is a highly controlled method of building the desired corneal shape from thousands of microscopic laser pulses. At 193 nm, the excimer beam is strongly absorbed by corneal tissue. Each pulse removes a tiny quantity of tissue. The scanner then constructs the desired three-dimensional corneal shape by distributing thousands of individual pulses across the treatment area.
TENEO’s algorithm intentionally distributes the pulses so that spatial overlap is limited and temporally separated.
TENEO continuously monitors critical aspects of laser delivery rather than simply assuming every pulse is being delivered as intended. The 1,740-Hz tracker is ~3.48× the 500-Hz laser repetition rate, allowing multiple positional measurements between laser pulses.
Built-In Safety Monitoring
The TENEO excimer laser system incorporates multiple safety interlocks that can interrupt laser delivery if predefined treatment conditions are not met. If eye position moves outside the permitted treatment range, the system can stop laser delivery rather than continuing to ablate outside the planned treatment area.
The system also monitors laser energy delivery and incorporates safety mechanisms around plume evacuation and beam delivery.
You don’t want the same tiny region of cornea receiving repeated pulses before it has dissipated heat. TENEO therefore uses an optimized pulse-sorting algorithm.
One peer-reviewed study reports that the algorithm is designed so that spots overlap only once every six pulses, while optimizing the spatial and temporal distribution of pulses. Learn more.
During your laser vision correction procedure, every additional manual transformation that the surgeon has to make creates a rare opportunity for human error. This is why we always recommend to our patients that no matter who they choose for their procedure, they should carefully evaluate their LASIK surgeon or PRK surgeon by experience, technology, outcomes, and transparency.
TENEO eliminates many additional manual inputs, reducing opportunities for errors in transcription, calculation, and output. Typically, a conventional surgeon workflow would include manifest refraction, surgeon-specific nomogram, modified sphere, modified cylinder, modified axis, and laser entry. TENEO is engineered to take the surgeon from manifest refraction to an efficient laser treatment algorithm which provides operational safety advantages and conveneince for both surgeon and patient.
There is another detail that most patients wouldn’t know. Excimer ablation creates a corneal plume containing ablated material. TENEO has an integrated plume evacuation system positioned near the treatment plane. Most critically: With TENEO, if plume evacuation fails during treatment, the laser stops firing. TENEO explicitly identifies plume-evacuator failure as a condition that disables laser radiation. The same applies if the suction nozzle isn’t correctly positioned, or if the LASIK flap is too small. This feature is designed to address both the patient’s comfort and the overall safety architecture of the laser.
TENEO incorporates two safety shutters in the excimer laser beam delivery path. FDA documentation says the shutter can block laser radiation in less than 50 ms, and there are separate sensors verifying the shutter’s open and closed positions. If the computer receives an incorrect shutter-position signal, the laser head shuts down.
Improved Contrast Sensitivity
Study results showed statistically significant improvement in contrast sensitivity, both with and without glare, compared to pre-op.
More Specifications
TENEO is an ArF excimer laser operating at 193 nm, with:
- 500 Hz repetition rate
- approximately 1.6 mJ pulse energy at the cornea
- 200 mJ/cm² fluence
- approximately 5–11 ns pulse duration
- approximately 1-mm spot
- truncated-Gaussian (“soft spot”) beam profile
- flying-spot scanning delivery
The laser gas is an argon/fluorine/neon mixture, with a nominal operating fill pressure of 6 bar.
The system includes:
- Pressure sensors
- Automatic valves
- Pressure reduction
- Vacuum pump
- Fluorine filter
- Computer-controlled gas delivery
TENEO offers multidimensional tracking. It tracks:
- X/Y – Horizontal and vertical translational movement
- Rotation – Cyclotorsional movement and intraoperative rotational movement
- Z – Axial position relative to the treatment plane
X/Y and rotation are active tracking, while Z tracking is passive. The FDA documentation specifically describes Z-position as being determined through triangulation using the two camera systems. If the eye moves outside the permitted Z range, the system stops delivering pulses.
TENEO’s PROSCAN algorithm is an aspheric, non-customized ablation profile based on population-average K and Q values. For the U.S. clinical trial, the default parameters were:
- K = 43.3 D
Q = −0.20
What Sets LaserVue Apart
Our Commitment to Your Safety – When you get laser vision correction with TENEO at LaserVue Eye Center, your procedure is performed in a temperature and humidity controlled environment.
When comparing providers and reviewing your options, we recommend to ask all providers about additional fees, particularly post-operative care and enhancements.
LaserVue Eye Center’s surgeons have over 30 combined years of surgical experience, with thousands of successful vision correction procedures!
LaserVue is one of the few Bay Area centers offering multiple laser technologies to better customize treatment plans to each patient’s unique needs.
- https://www.bauschsurgical.com/refractive/teneo/
- https://crstoday.com/articles/teneo-excimer-laser-platform/teneo-excimer-laser-platform/
- https://ir.bausch.com/press-releases/bausch-lomb-announces-publication-teneotm-excimer-laser-clinical-trial-results
- https://www.accessdata.fda.gov/cdrh_docs/pdf/P990027S021D.pdf
- https://youngmdconnect.com/articles/2024-aug-insert/teneo-excimer-laser-platform