Tomograph and corneal topographer

Sirius+ combines Placido Disk topography with Scheimpflug tomography of the anterior segment providing information on pachymetry, elevation, curvature and dioptric power of both corneal surfaces over a diameter of 12 mm. All biometric measurements of the anterior chamber are calculated using up to 100 HR corneal sections. Measurement  speed reduces the effect of eye movement producing a high quality accurate measurement.

In addition to the clinical diagnosis of the anterior segment  the most common uses  are: refractive and cataract surgery, an IOL calculation module is available.
Objective examinations provide an accurate measurment of pupil diameter in scotopic, mesopic and photopic conditions.



Keratoconous screening provides the clinician with important information about the patinets cornea. Understanding this can help prevent complications associated with ectasia before corneal surgery is undertaken.


For glaucoma specialists Sirius+ enables the measurement of irido-corneal angles and pachymetry. These two values are useful in the diagnosis of the disease.  


Sirius+ has built-in pupillography measurement software. The measurement of the pupil in scotopic, mesopic, photopic, conditions and in dynamic mode. knowledge of the center and the diameter of the pupil, is essential for many clinical procedures which seek to optimize vision  quality.  


This module is based on Ray-Tracing techniques, regardless of the state of the cornea (untreated or previously treated for refractive purposes), provides the calculation of the spherical and toric power of the intraocular lens.  


On the basis of the pachymetry map and corneal alti- metric data, Sirius+ allows for intrastromal rings system planning, which may be an option for the correction of refractive defects and some forms of keratoconus.


Aberrometric analysis offers a complete overview of the corneal aberrations. It is possible to select the contribution of the anterior, posterior or total cornea for different pupil diameters. The OPD/WFE maps and the visual simulations (PSF, MTF, image convolution with optotype) can help the clinician  in understanding or explaining the patient’s visual problems.


Dimensions (HxDxW) 509 x 315 x 260mm
Weight 7Kg
Chin rest movement 70mm ± 1mm
Minimum height of the chin cup from table 24cm
Base movement (xyz) 105 x 110 x 30mm
Working distance 74mm
Placido disk LED @400-700nm
Scheimpflug LED @475nm UV-free
Pupillography LED @940nm
Fluoresceine lighting LED @470nm
Auxiliary lighting LED 400-700nm
Placido disk rings 22
Measured points from 42032 to 151232 for the front surface from 36400 to 145600 for the rear surface
Topographic covering 12mm
Dioptric measurement range 1D to 100D
Measurement accuracy Class A according to the UNI EN ISO 19980-2012
Compatibility with standard DICOM v3 (IHE integration profile EYECARE Workflow)
Light diffuser filter for auxiliary illumination, magnetic lock light diffuser filter
Yellow barrier filter, magnetic lock 530 nm filter
Additional lens, magnetic lock -6D lens
Calibration tool r 8 mm calibration tool

PC:  CPU: I3 or higher ( suggested I5) - CHIP SET: intel - RAM: 4 Gbyte or higher (suggested 8 Gbyte) -
GRAPHIC VIDEO BOARD: 1 Gbyte not shared - RESOLUTION: 1280x960 or higher - USB 3.0 port -
Operating System: Windows 10 (64bit)