Zeiss CIRRUS photo 600, Manual

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Performance specifications
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Performance specifications
Functional description
The CIRRUS photo allows the fundus of the eye to be viewed and
documented as well as the anterior segment of the eye in plain view (classic
image capture) or as an optical section (OCT scan), with the pupil in a
naturally or medicinally-induced dilated state. Easy-to-use operation of
CIRRUS photo ensures quick results. The device is particularly suitable for
routine use. The fundus is evaluated on the basis of a flash photograph or
the OCT scan image. Image capture and display is fully digital.
The CIRRUS photo employs the ophthalmoscope principle of the modern
fundus camera. Cross-sectional images of a retinal area measuring
6 mm x 6 mm are generated as a cube scan or as a 5 line raster pattern
using the high resolution "spectral domain" optical coherence tomography
(SD-OCT) technique. A flash lamp is used for the image documentation.
Images of the fundus of the eye are taken at angles of 45° or 30°. The
device operates in non-contact mode.
Positioning and focusing of CIRRUS photo using infrared light is the basis for
its non-mydriatic mode of operation. This means that the use of pupil-
dilating drops is not necessarily required. Medicinally-induced dilation of the
pupil is required for image series such as angiography. Infrared diodes are
used as a light source for setting up CIRRUS photo. The working distance is
set up using two working distance dots and the fundus brought into focus
using a focusing aid.
The CIRRUS photo supports fundus image capture modes Color, G (green),
R (red), B (blue) and FA (fluorescein angiography), FAF (autofluorescence)
and ICGA (indocyanine green angiography), and OCT scan modes Macular
Cube 512x128, Macular Cube 200x200, Optic Disc 200x200,
HD 5 Line Raster , Anterior segment 5 Line Raster and Anterior
Segment Cube 512x128. The availability of the modes depends on the
model concerned. Some of the modes can only be enabled with an
appropriate license.
The CIRRUS photo includes an intuitive software interface for database-
supported patient and image data administration. Images and scans can be
displayed, printed and exported and patient data created and adapted with
no difficulty at any time. There are special analysis modules which can be
used to aid rapid interpretation of OCT scan data. The normative databases
and algorithms provided by Carl Zeiss Meditec represent the basis for these
modules.
As with many medical devices, the CIRRUS photo only offers data storage for
a limited period of time. Images should be stored long term using an
external archiving system (e.g. FORUM system). General export of the image
data can be carried out in DICOM, BMP, JPEG, PNG or TIFF format via a
network or using standard USB media.