With the ELT, the laser light is guided to the trabecular meshwork in the iridocorneal angle via a small corneal incision by means of an optical fiber suitable for UV light and embedded into a lightweight laser applicator. With the aid of a gonioscopy lens the fiber end can be positioned precisely at the application site.
To achieve an easier drainage of the aqueous humor to reduce IOP, a total of 10 ELT channels with 200µm diameter each are lasered into the trabecular meshwork by means of non-thermal photoablation. In comparison, stents and implants have only individual diameters between 80 – 120 µm.
The ELT-procedure takes advantage of a practically maintenance-free, encapsulated and easy-to-use ExTra XeCl excimer laser with a tissue-friendly wavelength of 308 nm.
In comparison to alternative methods, the lack of heat generation not only leads to an almost absent activation of postoperative tissue reactions, but also to an excellent long-term stability of the pressure-reducing effect. The stability of Schlemm’s canal remains unchanged.
The micro-invasive ELT which can only be performed with the ExTra is remarkably uncomplicated and can easily be combined with any other given intraocular treatment such as phacoemulsification.
The ExTra is mobile and both fast and easy to use. Thus, it can be easily integrated into any clinical workflow.