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The NAVILAS 577s is a navigated retinal laser system from the German company OD‑OS. It is one of the most technologically advanced retinal lasers in the world, combining a 577 nm yellow laser with computer navigation, eye‑tracking, and pre‑planned treatment.
Primary Indications
- Retinal photocoagulation (focal, grid, panretinal – PRP).
- Treatment of diabetic macular oedema and diabetic retinopathy.
- Central serous chorioretinopathy (CSC).
- Retinal vein occlusions, retinal breaks, peripheral degenerations.
- Additionally: anterior segment (iridotomy, laser trabeculoplasty in some versions).
Key Features
- Wavelength: 577 nm (pure yellow) – optimal absorption, less pain, good penetration.
- Navigation + eye‑tracking – the system tracks eye movements in real time and accurately delivers laser spots according to a pre‑planned treatment map.
- Non‑contact mode – often without a lens, with a wide field of view and infrared illumination (more comfortable for the patient).
- Modes:
- Continuous wave (classic).
- Microsecond pulsing / subthreshold (gentle, with no visible burns).
- Integrated digital fundus camera.
- Pre‑planning of treatment based on images (even remotely – teleguidance).
Advantages over conventional lasers (including EASYRET)
- Exceptional precision (especially in the macula) thanks to navigation and stop zones around the fovea and optic disc.
- Significantly less pain and better tolerability.
- More uniform and reproducible treatment.
- Speed: faster than traditional pattern lasers for peripheral coagulation.
- Digital documentation of every spot.
This is a premium‑class system – a «smart» laser that moves treatment from manual to digital. Many clinicians call it revolutionary, particularly for focal macular treatment and precise peripheral work.
Versions include Navilas 577s, 577s Pro, Prime, and others (differing in configuration and capabilities).