Anterior segment treatment mode for

Laser Peripheral Iridotomy

The intuitive anterior segment mode for Laser Peripheral Iridotomy (LPI) for Navilas® 577s supports the therapy of narrow-angle glaucoma and thus can contribute to the reduction of intraocular pressure.

Iridotomy treatment of narrow-angle glaucoma with the Navilas 577s retina laser

Laser Peripheral Iridotomy – how it works

The Navilas® 577s software 3.5 and higher enables the user to intuitively switch from retina treatment mode to the new anterior segment treatment mode which as a first step supports Laser Peripheral Iridotomy (LPI).

This software is designed for combination therapy with a standard iridotomy ("Abraham") lens with 0.63x laser spot magnification.

LPI allows the physician to prepare the iris with the Navilas® 577 nm yellow laser. After the initial treatment with Navilas®, the physician can complete the iridotomy treatment with less complication (bleeding) using a separate YAG laser. This combination therapy is a common procedure.


pre OP Navilas 577s iridotomy

Clinical Case Iridotomy


Female middle-aged patient presented with narrow angle glaucoma.

Treatment with Navilas® in two stages

  • First stage: Stretch the iris with 4 single spots using 200mW, 200ms and 200µm
  • Second stage: Remove iris stroma using 1000mW, 20ms and 50µm 


The YAG laser was used to complete the treatment. Due to combination therapy, hemorrhages could be prevented.


Iridotomy treatment with Navilas 577s

brochure, PDF, 597 kB


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