Lumenis (Coherent) Selecta 7000 SLT Laser

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Description:

The Coherent Medical Lumenis Selecta 7000 is an SLT (Selective Laser Trabeculoplasty) system using a frequency-doubled, Q-switched Nd:YAG. It delivers single pulses of 0.1 to 2.0 millojoules per pulse with a pulse duration of approximately 3 nanoseconds. This low energy, short pulsed treatment confines thermal damage to cells containing the target pigment or chromophore. In the case of trabecular meshwork, this target is represented by the pigmented cells. The nanosecond pulse duration is also an important factor in preventing collateral and coagulative damage. The Selecta 7000 is specifically designed to perform selective laser trabeculoplasty (SLT), which incorporates a technique for the treatment of open angle glaucoma.

SLT lowers intraocular pressure by using short pulses of an Nd:YAG laser to target melanin-containing cells in the trabecular meshwork, resulting in increased fluid outflow. The limitations of argon laser trabeculoplasty (ALT) are primarily related to its coagulative effect, which leads to scarring of the trabecular meshwork. SLT retains the therapeutic benefit of laser treatment — reduced intraocular pressure, without the collateral thermal damage to non-melanin containing cells and to the trabecular meshwork structure. The Coherent Selecta 7000 is the first FDA approved SLT laser to ever enter the market. It is stand alone and self-contained within its own slit lamp and table.