The ZEISS CLARUS 700 is the first fundus camera to combine an ultra-widefield of view with True colour high-resolution imaging. And now it comes with a full suite of imaging capabilities – including fluorescein angiography – and advanced features to collect the best image, every time.
Legacy ultra-widefield retinal imaging systems require separate devices to capture images of the periphery on the one hand and, on the other, high-definition colour images of the optic nerve head. A far better option is to meld the two capabilities in a single instrument – as ZEISS has done with CLARUS 700 – so that clinicians can retrieve high-resolution pictures of the retina from macula to far periphery in one coordinated system.
True colour
The CLARUS 700 is powered by Broad Line Technology: an innovative technology that illuminates only a small portion of the retina at any one time. This approach limits scatter and reflections and thus enables the user to visualise high-resolution details over a wide field. This is not possible with classic fundus cameras, which illuminate the whole field simultaneously. Furthermore, by sequential illumination with broad spectrum red, green and blue LEDs, Broad Line Technology captures images that closely resemble fundus colours as seen under direct clinical observation, thereby facilitating diagnostic analysis.
Comprehensive capabilities
The recent addition of ultra-widefield high-resolution fluorescein angiography to the CLARUS capability set aids in visualisation of vascular structures of the retina and the choroid. Fluorescein angiography may permit earlier identification of the more severe forms of diabetic retinopathy and reveals non-proliferative diabetic retinopathy signals that may not be visible in colour images. Beyond this, CLARUS 700 has a comprehensive suite of imaging modalities. These comprise of: infrared; red channel separation (reveals choroid in more detail); green channel separation (provides excellent contrast of retina, especially for vasculature and haemorrhages); blue channel separation (increases visibility of anterior retinal layer); FAF blue (helps reveal geographic atrophy); FAF green (can expose dry AMD); stereo imaging (for stereoscopic fundus evaluation); and views of the external eye. Together, these give the clinician unparalleled differential diagnosis capabilities, and may be employed together without compromising image quality.
Advanced features
CLARUS 700 utilises algorithm-based technology to take the pain out of image processing:
- PrecisionFocus allows the clinician to rapidly focus in on areas of interest to reveal salient details without losing the macula focal point
- AutoBright optimises the brightness of angiogram images while preserving changes in signal intensity, relieving clinicians of the burden of image adjustment
