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    Confocal scanner gives ophthalmologists valuable new tool

     

    Benefits of technology

    The confocal retinal imager (EIDON AF, CenterVue Spa) is a true-colour, last-generation confocal scanner with unique characteristics. Thanks to its confocal optics, it collects only the light reflected by the focal plan, excluding the components of the light originated by other eye structures. The device is able to capture sharp and well-defined images, with a higher contrast compared with non-confocal imagers. This is achieved without averaging multiple images to increase the signal-to-noise ratio, as other confocal scanners do.

    In addition, the technology can capture high-quality images even in conditions of poor mydriasis (pupil diameter of 2.5 mm) and can explore an area of the fundus of 60° (h) by 55° (w). It is noteworthy that, thanks to its 15 MP sensor, the product obtains the images with the highest pixel resolution among scanning laser ophthalmoscopes.

    The imager captures three different types of images:

    ·       those in true colours, obtained through a white light source (LED, 440-650 nm);

    ·       images in black and white, obtained using an infra-red source (LED, 825-870 nm) to examine choroid and the deepest layers of the retina;

    ·       and red-free images to enhance the visibility of the vessels and nerve fiber layer.

    In addition to the above-mentioned modes, the imager uses a blue light source (LED 450 nm) together with a barrier filter (500 nm) to capture FAF.

    The technology can operate in full-automatic mode for the capture of true colour, infra-red and autofluorescent images. In automatic mode, it controls the alignment and focus, and obtains a snapshot of both eyes in less than a minute. The system can also operate in manual and semi-automatic modes.

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