The quality and design of Tango’s slit lamp optics are optimized for anterior segment viewing – for both SLT and YAG treatment. Featuring Galilean converging optics with a 16° stereoscopic angle, Tango™ provides a more natural stereoscopic view combined with a shallow focusing depth.
Tango’s combination of high-grade crown glass materials and multi-layered, anti-reflection coatings on all optical components maximizes light transmission whilst minimizing dispersion to deliver better optical performance. In addition, next-generation filter technology provides the best color balance possible.
In YAG mode, Tango™ allows you to cut tissue more effectively using fewer shots and less cumulative energy – dramatically reducing the risk of IOL pitting. Featuring an Ultra Gaussian beam profile, Tango™ focuses more energy into the center of the beam profile to deliver greater energy density, achieving optical breakdown (in air) of approximately 1.8mJ, in optimal conditions. This compares to other YAG lasers, which typically achieve optical breakdown (in air) of 3 to 4mJ in optimal conditions.
Capsulotomy for Presbyopic IOLs
A precise capsulotomy is essential for IOLs that correct presbyopia through implantation in the posterior chamber’s capsular bag. Good IOL centration, in terms of the pupil, optimizes lens performance. In contrast, decentration can cause halos and poor vision. The goal is a perfectly centered, precise capsulotomy that will not affect the tension of the bag and the position of the IOL in the visual axis. The precision and ultra-low energy optical breakdown provided by the Tango™ creates a capsulotomy opening that is precisely controlled, without causing damage to the lens – even if the lack of a ridge makes the capsule adhere to the optic.
Iridotomy for Phakic IOLs
Refractive IOLs that are designed to correct myopia, or hyperopia (also known as Phakic IOLs) can be placed in front of the iris or between the iris and the natural lens. To prevent any possibility of IOL-induced pupillary block, these lenses require peripheral iridotomies prior to surgery. The iridotomy aperture must be large enough to ensure a balanced aqueous flow, yet small enough so that no light is transmitted back to the pupil, which can cause double vision. Tango™ enables you to create a precise size of the iridotomy, often in a single shot that uses lower energy than other YAG lasers.
In YAG mode, Tango™ is life-tested to deliver more than 400,000 shots over a wide range of operating conditions.
A Q-switch is an optical component used to “gate” energy in order to generate a short, high peak-energy pulse The Q-switching element used in Ultra Q™ is fabricated from highly stable, homogenous materials, which exhibit similar expansion characteristics. Unlike organic polymer materials that can cause inconsistent treatment performance due to material warping and fatigue, the materials used in the Tango™ Q-Switch are thermally matched to deliver more consistent performance over a number of different operating conditions – ensuring robust, reliable performance. In addition, Tango’s custom-built YAG power supply incorporates a micro-controller and energy compensation algorithm to deliver greater shot-to-shot consistency.
With the industry’s fastest firing rate at 3 shots per second, Tango™ saves you time and allows you to perform quick and highly accurate treatment. Other SLT/YAG lasers simply can’t keep up, averaging 2.5 hertz in SLT mode and 2 hertz in YAG mode respectively. Tango’s patented, proprietary cavity facilitates more effective heat transfer and cooling, thereby permitting fast, efficient operation. In addition, the system’s pulse capacitors are rapidly recharged between each and every shot without the risk of overheating – ensuring you of uninterrupted operation.
Video courtesy of Prof. Philippe Denis, University Hospitals of Lyon, France.
Precise SLT Treatment
Tango’s system electronics, energy attenuator and energy monitor are configured to deliver optimal positional resolution. In addition, an automatic calibration process, combined with start-up and test-fire sequences, uses feedback from the energy monitor in order to constantly adjust the system to ensure more reliable, stable output. The end result: parameter settings can be adjusted in 0.1 mJ increments to ensure precise treatment results. This capability, coupled with superior energy control, enables you to deliver highly accurate SLT treatment. All SLT treatment parameters are designed to industry-recognized treatment protocols, maximizing treatment options and ensuring effective patient results.
Precise YAG Treatment
Accurate focusing on the capsule (anterior or posterior) is critical to preventing IOL pitting. With a tolerance range of ± 8 microns, Tango’s fine, two-point focusing system in YAG mode makes it easy for you to know when you are in focus, ensuring that energy is delivered where you intend in relation to your target.
With a two-point focusing system the two aiming beams converge in the focal plane. This simple, yet highly precise aiming system, is the most accurate at indicating when the laser and slit lamp view are in proper focus, as it allows you to see a separation of the two aiming beams (which indicates out-of-focus) with even the smallest of slit lamp (or patient) movements.
In comparison, four-point and many other focusing systems require a significant shift in the slit lamp’s position before you can distinguish any separation of the aiming beams.
In order to deliver precise treatment and avoid the risk of side effects like IOL pitting, Tango’s continuously variable posterior offset control adjustment (from 100 to 500 microns) allows the most precise adjustment of the plasma ball’s position. Since the plasma ball creates shock waves that move back in the direction of the laser source (that is, towards the operator), the ideal placement of the plasma ball is slightly “posterior offset” from the target tissue to be incised.
Ellex has integrated the laser and slit lamp for greater efficiency and reliability, as well as for improved ease of use. Tango’s compact, efficient design provides you with additional working space – making it easier to align the patient and to position the contact lens. It also offers the added benefit of convenient, simultaneous access to the patient and laser controls. As an added benefit, it minimizes system downtime because there are no exposed fiber-optic or electrical cables to accidentally damage and thereby eliminates the need for you to calibrate the system, or to reposition cables or adapters – simply aim, shoot and fire.
Designed to make procedures as efficient as possible, Tango™ features a dual-mode laser cavity design — allowing you to instantly switch between SLT and YAG modes at the touch of a button. Unlike other SLT/YAG lasers, which feature laser cavities outsourced from third-party manufacturers, Tango™ incorporates Ellex’s proprietary, patented dual-mode laser cavity design. Not only does this ensure the integrity of the system and its performance, but it also allows us to provide an unmatched level of service support. Other SLT/YAG lasers are plagued by noisy, unreliable operation and time-consuming mechanisms.
Tango in SLT Mode
Tango™ features a high level of precision, in which parameter settings can be adjusted at 0.1 mJ increments. This capability, coupled with superior energy control, enables you to deliver highly accurate SLT treatment. All SLT treatment parameters are designed to industry-recognized treatment protocols, maximizing treatment options and ensuring effective patient results – and enabling treatment to be tailored to the individual patient’s response.
Treatment is undertaken in single-shot mode, with consecutive but not overlapping spots placed over the interior half of the trabecular meshwork. To determine the optimal level of energy for each patient, the energy level is gradually increased until the threshold energy level for mini-bubble information is observed, or decreased if bubble formation is noted.
Tango in YAG Mode
When in YAG mode, Tango™ allows you to cut tissue more effectively using fewer shots and less cumulative energy – dramatically reducing the risk of IOL pitting. Featuring an Ultra Gaussian beam profile, Tango™ focuses more energy into the center of the beam profile to deliver greater energy density, achieving optical breakdown (in air) of approximately 1.8mJ, in optimal conditions. This compares to other YAG lasers, which typically achieve optical breakdown (in air) of 3 to 4mJ in optimal conditions.
Low energy breakdown can only be achieved by a custom-designed laser cavity optimized to produce an Ultra Gaussian pulse. The laser cavity should produce a short pulse of no more than four nanoseconds with high peak energy.
Fast pulse rise time is another critical factor. It allows the energy delivered to reach the optical breakdown threshold more quickly, and thereby forms a small, tight plasma ball with a smaller resultant shock wave and less risk of damage to surrounding tissue.
Together, an Ultra Gaussian pulse and fast pulse rise time contribute to plasma formation and tissue incision at lower energy with fewer shots and less cumulative energy, which is safer and enables more precise treatment.
Easy access for patients in a wheelchair.
Portable option for ease of transportation.
Wheelchair Accessible, Mobile
Benefits of wheelchair accessibility combined with ease of transportation.