The information provided by Osiris-T, a corneal topographer combined with a total ocular aberrometer, is indispensable for the correct evaluation of patients who have, in addition to traditional low-order defects, even more complex ocular aberrations, either corneal or internal.

Osiris-T has a unique pyramidal sensor design that allows the aberrometer to measure aberrations with a resolution of 45,000 points (at the maximum pupil diameter), with a wide dynamic range. It is also able to measure the ocular wavefront in real time with a frame rate of up to 33 images per second: this makes it possible to measure and view changes in power and aberrations while the patient is accomodating. Phoenix software offers a wide range of analysis options, such as refractive error maps and visual simulations (PSF, MTF and convolution with optotype), which helps the clinician to understand and explain the patient’s visual problems.

Using a reflection topography system based on a 22 ring Placido disk, Osiris-T is able to measure the morphology and the corneal refractive component by means of the sagittal curvature, tangential curvature, elevation and power maps. The availabilty of consolidated synthesis parameters makes the follow-up and diagnosis of keratoconus simple and intuitive. The integration of topographry and aberrometery enables the calculation of the internal component of the wavefront.


For the evaluation of the performances of a toric system the combination of corneal topography imported from CSO topographers and ocular aberration makes it possible to distinguish whether any astigmatic residue is due to a rotation of the lens or to an incorrect calculation.  


Completely integrated with the topography of the ante- rior surface of the cornea, it performs the pupil measu- rement in scotopic (0.04 lux), mesopic (4 lux), photopic (50 lux) conditions and in dynamic mode. Knowing the center and the diameter of the pupil, is essential for many clinical procedures which seek to optimize vision quality.  


The tool integrates with the Phoenix software, offering a wide range of analysis options, such as refractive error maps and visual simulations (PSF, MTF and convolution with optotype), which helps the clinician to understand and explain the patient’s visual problems.  


Phoenix software enables the analysis of the patient’s ocular wavefront, both as a deviation from the wavefront and as a refractive dfference from the ideal.  
Clinical evaluation of the repeatability of ocular aberrometry obtained with a new pyramid wavefront sensor
Author information
Ana B Plaza-Puche, Liberdade C Salerno Liberdade C Salerno
Validation of a Clinical Aberrometer Using Pyramidal Wavefront Sensing
Author information
Singh, Neeraj K. BSOptom, MPhil1*; Jaskulski, Matt PhD1; Ramasubramanian, Viswanathan BSOptom, PhD1; Meyer, Dawn OD1; Reed, Olivia OD, MS1; Rickert, Martin E. PhD1; Bradley, Arthur PhD1; Kollbaum, Pete S. OD, PhD1
Clinical Retinal Image Quality of a Non-diffractive Wavefront-Shaping Extended Depth of Focus (Vivity) Intraocular Lens.
Al-Amri SAJ, Alió JL, Milán-Castillo R, D'Oria F, Martinez-Abad A, Yebana P, Subirana N, Al-Harbi Z, Plaza-Puche AB, Alió Del Barrio
Visual Outcomes, Patient Satisfaction, and Light Distortion Analysis After Blended Implantation of Rotationally Asymmetric Multifocal Intraocular Lenses.
Vargas V, Ferreira R, Alió Del Barrio JL, Alió JL.
Long-term results of a diffractive trifocal intraocular lens: Visual, aberrometric and patient satisfaction results.
Oliveira RF, Vargas V, Plaza-Puche AB, Alió JL.
Optical behavior of the eye implanted with extreme intraocular lens powers.
Oliveira RF, Salerno LC, Mimouni M, Plaza-Puche AB, Alió JL.
Customized laser vision correction for irregular cornea post-refractive surgery.
Shetty R, Lalgudi VG, Kaweri L, Choudhary U, Chabra A, Gupta K, Khamar P.
Dissatisfaction After Trifocal IOL Implantation and Its Improvement by Selective Wavefront-Guided LASIK.
Seiler TG, Wegner A, Senfft T, Seiler T.
Pyramidal Aberrometry in Wavefront-Guided Myopic LASIK.
Frings A, Hassan H, Allan BD.
Retinal image quality with multifocal, EDoF, and accommodative intraocular lenses as studied by pyramidal aberrometry.
Alio JL, D'Oria F, Toto F, Balgos J, Palazon A, Versaci F, Alio Del Barrio JL.


Data transfer USB 3.0
Power supply external power source 24 VDC In: 100-240Vac - 50/60Hz - 2A - Out: 24Vdc - 100W
Power cable IEC C14 plug
Dimensions (HxWxD 515 x 315 x 255mm
Weight 10.4Kg
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
Aberrometer Led @850nm
Fixation Led @450-650nm
Placido Led @635nm
Pupillometry and auxiliary Led @780nm
Points measured at maximum pupil 45000
Spatial resolution 41μm
Pupil size range 2-9mm
Dioptric range sph from -25D to +15D; cyl up to 10D
Repeatability 0.05D on test eyes
Placido rings 22
Measured points 5632
Topographic covering (in 43D) 10mm
Dioptric measurement range from 1D to 100D
Measurement accuracy Class A according to UNI EN ISO 19980-2012
Compatibility with standard DICOM v3 (IHE integration profile EYECARE Workflow)
PC: 4 GB RAM - Scheda Video 1 GB RAM (non condivisa) risoluzione 1024 x 768 pixels - USB 3.0 type A Sistema operati vo: Windows XP, Windows 7 e Windows 10 (32/64 bit).