Eidon AF - with added autofluorescence image capability
The Eidon AF boasts all the features and functionality of the popular Eidon - including unparalleled high-quality, wide-field imaging - with added autofluorescence image capability. The mosaic function allows the system to capture images up to 150°, providing a panoramic view of the retinal autofluorescence.
Please tell me more about Eidon
The first true colour scanning ophthalmoscope
The Eidon provides unsurpassed image quality, a 60° field in a single exposure, a unique, live confocal view of the retina, three different imaging modalities and dilation-free operation, all integrated in a versatile system that provides new opportunities in retinal diagnostics.
Enhanced confocal image quality
Scanning laser ophthalmoscopes (SLO) are superior to conventional fundus cameras in many ways, as they exploit a confocal imaging principle which limits the effect of backscattered light from deeper layers and provides enhanced image quality. SLO systems also offer the advantage of operating with much smaller pupils than conventional fundus cameras. However, they do not provide colour images, as they typically employ multiple, monochromatic laser sources, resulting in black and white or pseudo-colour images.
Unlike existing SLO systems, Eidon is a scanning ophthalmoscope that uses white light instead of monochromatic lasers. Uniquely, it provides true-colour imaging and offers major benefits in terms of fidelity to real retinal appearance, no distortion and dilation-free operation.
The importance of white-light confocal imaging
This particular technology facilitates diagnosis and monitoring of retinal diseases such as diabetic retinopathy, Age-related Macular Degeneration (AMD) and glaucoma.
Eidon improves retinal diagnostics capabilities, offering greater contrast than a traditional fundus camera and preserved image quality in presence of media opacities, such as cataracts. It captures high-resolution images (with no dilation) down to a 2.5 mm pupil, with no optic disc bleaching and no saturation of the red channel, as seen in traditional fundus cameras.
Unique combination of confocal & white light illumination
The unique combination of confocal imaging and white light illumination offers superior image quality and colour fidelity. Using white light, the retina appears as it looks when directly observed, as the entire visible spectrum is present in the captured image.
The Eidon is capable of capturing a 60° field in a single exposure and supports single or multi-field acquisitions. It offers seven pre-defined fields and allows a selection of nonstandard fields by displacing the fixation target. The Eidon offers automated infrared, live-viewing of a wide-field (out to 110°) and also provides a manual mode, reaching up to 150°.
Multiple imaging modalities
Multiple confocal imaging modalities are available, including; true-colour, red-free and infrared. They provide specific information concerning different layers. Red-free is useful to enhance the visibility of the retinal vasculature and retinal nerve fibre layer.
Infrared (825 – 870 nm) provides information corresponding to deeper layers (choroid) and true-colour is obtained using white illumination (440 - 650 nm).
The Eidon automatic mode automatically captures a single 60° field up to 110° field. The system will auto-align to the patient’s pupil, automatically focus to correct for spherical refraction (-12D + 15D), then automatically expose and capture single or multiple fields, in single or dual modality (colour and/or infrared).
The manual mode gives you the option to have full control of the camera, or control certain aspects. It allows you to control override of the auto-alignment function and the auto-focusing function, placement of the fixation target at any position and override of the auto-capture function. The user can capture up to 150° in manual mode.
Cup-to-disc ratio & image flickering
The Eidon now includes a cup-to-disc ratio measurement tool for the assessment of progression in glaucoma. The system also offers image flickering for differential analysis of the retina.
LED flash technology guarantees maximum patient comfort, as it uses a low power light source. This, in turn, reduces pupil constriction and facilitates the test on non-cooperative subjects.
The Eidon offers a user-friendly software interface, which takes no time to learn how to use. Fully-automated, it captures each eye in less than a minute. It is a compact device, has no need for an external computer and offers an exam time of less than one minute per eye (single field).
Connectivity anytime, anywhere
The Eidon offers embedded capabilities for internet and network connectivity, including both wired and Wi-Fi for remote data viewing and secure data backup. Connectors include 3 USB ports and an Ethernet connection.
The Eidon is operated by a multi-touch, high-resolution colour display tablet. It works with a dedicated software application and operates as a stand-alone unit with Wi-Fi connectivity.
DICOM compatible for improved connectivity
DICOM support is available on the Eidon AF and offers a worklists service, C-store service and a storage commitment service.
The Eidon AF has autofluorescence capability and is an extraordinary tool for obtaining multiple types of high-value information from multiple imaging modalities.
White illumination is able to provide high-quality true colour imaging. Red-free is useful to enhance the detail of the retinal vasculature and retinal nerve fibre layer. Infrared light provides information corresponding to the choroid. The autofluorescence capability allows the assessment of the Retinal Pigment Epithelial (RPE) layer.
The importance of Autofluorescence
Fundus Autofluorescence (FAF) imaging is a non-invasive technique which provides information on retinal metabolism and health, by showing changes in the integrity of the Retinal Pigment Epithelial (RPE) layer.
FAF imaging may help to understand metabolic alterations of the RPE in the pathogenesis of several retinal disorders.
The Eidon AF provides clinically useful information by taking an image based on the distribution pattern of fluorescent pigments accumulating in the RPE, such as lipofuscin. An accumulation of lipofuscin increases FAF signal (bright areas), signifying RPE dysfunction. An absence of lipofuscin decreases the FAF signal (dark areas) indicating RPE or photoreceptor death.