Introducing the 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.

Confocal vs non-confocal

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.

Confocal vs non-confocal

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.

Confocal vs non-confocal

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.

Wide-field imaging

Wide-field imaging

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°.

Wide-field imaging

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).

Wide-field imaging

Automatic mode

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).

Wide-field imaging

Manual mode

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.  

Wide-field imaging

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.

Intuitive design & connectivity


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).

Intuitive design & connectivity

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.

Introducing Eidon AF

Autofluorescence modality

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.

Introducing Eidon AF

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.

Introducing Eidon AF

Key principles

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.