SIRIUS

TOMOGRAPH AND CORNEAL TOPOGRAPHER

Combines placido disk topography with Sheimpflug tomography of the anterior segment. Sirius provides 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 25 sections from the cornea. Measurement speed reduces the effect of eye movement producing a high quality accurate measurement.

In additi on to the clinical diagnosis of the anterior segment the most common uses are: refractive and cataract surgery, an IOL calculati on module is available. Objective examinations provide an accurate measurement of pupil diameter in scotopic, mesopic and photopic conditions. when combined with the corneal map they can be used for refractive surgery planning and follow-up.

 

KERATOCONOUS SCREENING

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.  

GLAUCOMA SCREENING

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

PUPILLOGRAPHY

Sirius has built-in pupillography measurement software. The measurement of the pupil 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.  

CORNEAL ABERROMETRY

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.  

ADVANCED ANALYSIS OF THE tear FILM

Placido disk technology allows for the advanced analysis of the tear film, such as NIBUT (Non Invasive Break-up Time).  Based on the Ocular Surface Disease Index questionnaire (OSDI), limbal and conjunctival hyperaemia, Meibomian glands analysis, tear meniscus analysis  and tear osmolarity, calculated merging together all partial scores, provides an owerall evaluation of the clinical condition of the patient for a comprehesive diagnosis of the dry eye disease.  

INTRASTROMAL RINGS

On the basis of the pachymetry map and corneal alti- metric data, SIRIUS allows for intrastromal rings system planning, which maybe an option for the correction of refractive defects and some forms of keratoconus.  
Caputo, Roberto, et al. "Very low prevalence of keratoconus in a large series of vernal keratoconjunctivitis patients." American journal of ophthalmology 172 (2016): 64-7

Author information: Pediatric Ophthalmology Unit, A. Meyer Children's Hospital, Florence, Italy. 2 CSO srl, Florence, Italy. 3 Pediatric Allergology Unit, A. Meyer Children's Hospital, Florence, Italy. 4 Statistics and Epidemiology Unit, A. Meyer Children's Hospital, Florence, Italy. 5 Ophthalmology Unit, Careggi Hospital, Florence, Italy. 6 Department of Ophthalmology and Visual Sciences, University of Maryland School of Medicine, Baltimore, Maryland. Electronic address: bjeng@som.umaryland.edu.
Prakash, Gaurav, et al. "Differences in central and non‐central keratoconus, and their effect on the objective screening thresholds for keratoconus." Acta ophthalmologica 94.2 (2016): e118-e129.

Author information: Department of Cornea and Refractive Surgery, NMC Eye Care, New Medical Center Specialty Hospital, Abu Dhabi, United Arab Emirates.
Maresca, Nunzio, et al. "Agreement and reliability in measuring central corneal thickness with a rotating Scheimpflug–Placido system and ultrasound pachymetry." Contact Lens and Anterior Eye 37.6 (2014): 442-446.

Author information: Degree Course in Optics and Optometry, Faculty of Mathematics, Physics and Natural Sciences, Roma TRE University, Rome, Italy. Electronic address: nunziomaresca88@hotmail.com. 2 Degree Course in Optics and Optometry, Faculty of Mathematics, Physics and Natural Sciences, Roma TRE University, Rome, Italy. 3 Degree Course in Optics and Optometry, Faculty of Mathematics, Physics and Natural Sciences, Roma TRE University, Rome, Italy; Ospedale "Grassi" Roma, Italy. 4 Department of Physics (Optics and Optometry), University of Florence, Italy.
Prakash, Gaurav, Muhammad Suhail, and Dhruv Srivastava. "Predictive analysis between Topographic, Pachymetric and Wavefront Parameters in Keratoconus, Suspects and normal eyes: creating Unified Equations to evaluate Keratoconus." Current eye research 41.3 (2016): 334-342.

Author information: a Department of Cornea and Refractive Surgery , NMC Eye Care, New Medical Center Specialty Hospital , Abu Dhabi , United Arab Emirates.
Prakash, Gaurav, et al. "Assessment of bilateral pupillary centroid characteristics at varying illuminations and post‐photopic flash response using an automated pupillometer." Clinical and Experimental Optometry 99.6 (2016): 535-543.

Author information: Department of Cornea and Refractive Surgery, NMC Eye Care, New Medical Center Specialty Hospital, Abu Dhabi, United Arab Emirates. drgauravprakash@gmail.com. 2 Department of Cornea and Refractive Surgery, NMC Eye Care, New Medical Center Specialty Hospital, Abu Dhabi, United Arab Emirates
Jorge, Jorge, et al. "Central corneal thickness and anterior chamber depth measurement by Sirius® Scheimpflug tomography and ultrasound." Clinical ophthalmology (Auckland, NZ) 7 (2013): 417

Author information: Clinical and Experimental Optometry Research Laboratory, Center of Physics (Optometry), School of Sciences, University of Minho, Braga
Ruiz-Belda, Clara, et al. "Intra-session repeatability of iridocorneal angle measurements provided by a Scheimpflug photography-based system in healthy eyes." Graefe's Archive for Clinical and Experimental Ophthalmology 254.1 (2016): 169-175

Author information: Department of Ophthalmology (OFTALMAR), Vithas Medimar International Hospital, C/Padre Arrupe, 20, 1st floor, 03016, Alicante, Spain. 2 Foundation for Visual Quality (FUNCAVIS), Alicante, Spain. 3 Department of Ophthalmology (OFTALMAR), Vithas Medimar International Hospital, C/Padre Arrupe, 20, 1st floor, 03016, Alicante, Spain. david.pinyero@ua.es. 4 Foundation for Visual Quality (FUNCAVIS), Alicante, Spain. david.pinyero@ua.es. 5 Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain. david.pinyero@ua.es. 6 Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain. 7 Miguel Hernández University, Elche (Alicante), Spain.
Prakash, Gaurav, et al. "Comparative Evaluation of the Corneal and Anterior Chamber Parameters Derived From Scheimpflug Imaging in Arab and South Asian Normal Eyes." Cornea 34.11 (2015): 1447-1455

Author information: *Cornea and Refractive Surgery Services, NMC Eye Care, New Medical Center Specialty Hospital, Abu Dhabi, United Arab Emirates; †Uvea and Ocular Inflammation Services, NMC Eye Care, New Medical Center Specialty Hospital, Abu Dhabi, United Arab Emirates; and ‡Paediatric Ophthalmology Services, NMC Eye Care, New Medical Center Specialty Hospital, Abu Dhabi, United Arab Emirates.
Zheng, Yan-Zhen, et al. "Analysis of the optical quality by determining the modulation transfer function for anterior corneal surface in myopes." International journal of ophthalmology 5.2 (2012): 196
Prakash, Gaurav, Dhruv Srivastava, and Sounak Choudhuri. "A novel Hartman Shack-based topography system: repeatability and agreement for corneal power with Scheimpflug+ Placido topographer and rotating prism auto-keratorefractor." International ophthalmology 35.6 (2015): 869-880.

Author information: Department of Cornea and Refractive Surgery, NMC Eye Care, New Medical Center Specialty Hospital, Electra Street, PO Box 6222, Abu Dhabi, United Arab Emirates. drgauravprakash@gmail.com. 2 Department of Cornea and Refractive Surgery, NMC Eye Care, New Medical Center Specialty Hospital, Electra Street, PO Box 6222, Abu Dhabi, United Arab Emirates.
Savini, Giacomo, et al. "Accuracy of corneal power measurements by a new Scheimpflug camera combined with Placido-disk corneal topography for intraocular lens power calculation in unoperated eyes." Journal of Cataract & Refractive Surgery 38.5 (2012): 787-792.

Author information: G.B. Bietti Eye Foundation-IRCCS, Rome, Italy. giacomo.savini@alice.it
Wang, Qinmei, et al. "Anterior chamber depth measurements using Scheimpflug imaging and optical coherence tomography: repeatability, reproducibility, and agreement." Journal of Cataract & Refractive Surgery 41.1 (2015): 178-185.

Author information: From the School of Optometry and Ophthalmology and Eye Hospital (Wang, Ding, Chen, Feng, Pan, Hua, Huang), Wenzhou Medical University, and the Key Laboratory of Vision Science (Wang, Ding, Chen, Huang), Ministry of Health P.R. China, Wenzhou, Zhejiang, China; G.B. Studio Oculistico d'Azeglio (Savini), Bologna, Italy. 2 From the School of Optometry and Ophthalmology and Eye Hospital (Wang, Ding, Chen, Feng, Pan, Hua, Huang), Wenzhou Medical University, and the Key Laboratory of Vision Science (Wang, Ding, Chen, Huang), Ministry of Health P.R. China, Wenzhou, Zhejiang, China; G.B. Studio Oculistico d'Azeglio (Savini), Bologna, Italy. Electronic address: viphjh@hotmail.com.
Savini, Giacomo, et al. "Comparison of anterior segment measurements by 3 Scheimpflug tomographers and 1 Placido corneal topographer." Journal of Cataract & Refractive Surgery 37.9 (2011): 1679-1685.

Author information: G.B. Bietti Eye Foundation-IRCCS, Rome, Italy. giacomo.savini@alice.it
Savini, Giacomo, et al. "Corneal ray tracing versus simulated keratometry for estimating corneal power changes after excimer laser surgery." Journal of Cataract & Refractive Surgery 40.7 (2014): 1109-1115.

Author information: From the Studio Oculistico d'Azeglio (Savini), Bologna, the Department of Physics (Optics and Optometry) (Calossi), University of Florence, Florence, Sekal Microchirurgia Rovigo (Camelin), Rovigo, Carones Ophthalmology Center (Carones), Milan, and Studio Oculistico Fantozzi (Fantozzi), Pescia, Italy; the School of Optometry and Ophthalmology and Eye Hospital (Savini), Wenzhou Medical University, Wenzhou, Zhejiang, China; the Department of Ophthalmology (Hoffer), University of California, Los Angeles, and St. Mary's Eye Center, Santa Monica, California, USA. Electronic address: giacomo.savini@alice.it. 2 From the Studio Oculistico d'Azeglio (Savini), Bologna, the Department of Physics (Optics and Optometry) (Calossi), University of Florence, Florence, Sekal Microchirurgia Rovigo (Camelin), Rovigo, Carones Ophthalmology Center (Carones), Milan, and Studio Oculistico Fantozzi (Fantozzi), Pescia, Italy; the School of Optometry and Ophthalmology and Eye Hospital (Savini), Wenzhou Medical University, Wenzhou, Zhejiang, China; the Department of Ophthalmology (Hoffer), University of California, Los Angeles, and St. Mary's Eye Center, Santa Monica, California, USA.
Huang, Jinhai, et al. "Evaluation of corneal thickness using a Scheimpflug–Placido disk corneal analyzer and comparison with ultrasound pachymetry in eyes after laser in situ keratomileusis." Journal of Cataract & Refractive Surgery 39.7 (2013): 1074-1080.

Author information: School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical College, and the Key Laboratory of Vision Science, Ministry of Health PR China, Wenzhou, Zhejiang, China.
Savini, Giacomo, et al. "Influence of posterior corneal astigmatism on total corneal astigmatism in eyes with moderate to high astigmatism." Journal of Cataract & Refractive Surgery 40.10 (2014): 1645-1653.

Author information: From the Studio Oculistico d'Azeglio (Savini), Bologna, G.B. Bietti Eye Foundation I.R.C.C.S. (Ducoli), Rome, and Costruzione Strumenti Oftalmici Srl (Versaci, Vestri), Florence, Italy; School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University (Savini), Wenzhou, Zhejiang, China; Regions Hospital Randers (Næser), Randers, Denmark. Electronic address: giacomo.savini@alice.it. 2 From the Studio Oculistico d'Azeglio (Savini), Bologna, G.B. Bietti Eye Foundation I.R.C.C.S. (Ducoli), Rome, and Costruzione Strumenti Oftalmici Srl (Versaci, Vestri), Florence, Italy; School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University (Savini), Wenzhou, Zhejiang, China; Regions Hospital Randers (Næser), Randers, Denmark.
Montalbán, Raúl, et al. "Intrasubject repeatability in keratoconus-eye measurements obtained with a new Scheimpflug photography–based system." Journal of Cataract & Refractive Surgery 39.2 (2013): 211-218.

Author information: Instituto Oftalmológico de Alicante, Vissum Corporation, Alicante, Spain.
Montalbán, Raúl, et al. "Intrasubject repeatability of corneal morphology measurements obtained with a new Scheimpflug photography–based system." Journal of Cataract & Refractive Surgery 38.6 (2012): 971-977.
Milla, Myriam, et al. "Pachymetric measurements with a new Scheimpflug photography–based system: intraobserver repeatability and agreement with optical coherence tomography pachymetry." Journal of Cataract & Refractive Surgery 37.2 (2011): 310-316.

Author information: Vissum Corporation-Instituto Oftalmológico de Alicante, Universidad de Alicante, Alicante, Spain.
Huang, Jinhai, et al. "Precision of a new Scheimpflug and Placido-disk analyzer in measuring corneal thickness and agreement with ultrasound pachymetry." Journal of Cataract & Refractive Surgery 39.2 (2013): 219-224.

Author information: School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical College, Wenzhou, Zhejiang, China.
Savini, Giacomo, et al. "Repeatability of automatic measurements by a new Scheimpflug camera combined with Placido topography." Journal of Cataract & Refractive Surgery 37.10 (2011): 1809-1816.

Author information: GB Bietti Eye Foundation-IRCCS, Rome, Italy. giacomo.savini@alice.it
Chen, Wuhe, et al. "Scheimpflug–Placido topographer and optical low-coherence reflectometry biometer: Repeatability and agreement." Journal of Cataract & Refractive Surgery 38.9 (2012): 1626-1632.

Author information: School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical College, Wenzhou, Zhejiang, China.
Huang, Jinhai, et al. "Comparison of anterior segment measurements with Scheimpflug/Placido photography-based topography system and IOLMaster partial coherence interferometry in patients with cataracts." Journal of ophthalmology 2014 (2014).

Author information: School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, 270 West Xueyuan Road, Wenzhou, Zhejiang 325027, China ; Key Laboratory of Vision Science, Ministry of Health, 270 West Xueyuan Road, Wenzhou, Zhejiang 325027, China. 2 School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, 270 West Xueyuan Road, Wenzhou, Zhejiang 325027, China. 3 Studio Oculistico d'Azeglio, Bologna, Italy.
Savini, Giacomo, Kenneth J. Hoffer, and Michele Carbonelli. "Anterior chamber and aqueous depth measurement in pseudophakic eyes: agreement between ultrasound biometry and Scheimpflug imaging." Journal of Refractive Surgery 29.2 (2013): 121-125.

Author information: Bietti Eye Doundation, Rome, Italy. giacomo.savini@alice.it
Alpins, Noel, James KY Ong, and George Stamatelatos. "Corneal topographic astigmatism (CorT) to quantify total corneal astigmatism." Journal of Refractive Surgery 31.3 (2015): 182-186.
Gaskin, Jennifer C. Fan, Chi Ying Chou, and Charles NJ McGhee. "Pentacam keratometric values unreliable for IOL power calculation after refractive surgery." Journal of refractive surgery 29.1 (2013): 10-10.
Nasser, Cornelius K., et al. "Repeatability of the Sirius imaging system and agreement with the Pentacam HR." Journal of Refractive Surgery 28.7 (2012): 493-497.

Author information: Department of Ophthalmology, Assaf Harofeh Medical Center, Israel. Cornelius.nasser@gmail.com
Prakash, Gaurav, et al. "Multivariate Analysis to Predict the Horizontal Anterior Chamber Diameter from Other Anterior Chamber Parameters Using Scheimpflug Imaging: Is There a Better Method Than Adding a Fixed Constant?." Current eye research 42.1 (2017): 58-64.

Author information: a Cornea and Refractive Surgery Services, NMC Eye Care , New Medical Center Specialty Hospital , Abu Dhabi , United Arab Emirates.
Arbelaez, Maria Clara, et al. "Use of a support vector machine for keratoconus and subclinical keratoconus detection by topographic and tomographic data." Ophthalmology 119.11 (2012): 2231-2238.

Author information: Muscat Eye Laser Center, Muscat, Oman.
Huang, Jinhai, et al. "A comparison between Scheimpflug imaging and optical coherence tomography in measuring corneal thickness." Ophthalmology 120.10 (2013): 1951-1958.

Author information: School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China; Key Laboratory of Vision Science, Ministry of Health P. R. China, Wenzhou, Zhejiang, China.
Pult, Heiko, and Jason J. Nichols. "A review of meibography." Optometry and Vision Science 89.5 (2012): E760-E769.

Author information: Dr. Heiko Pult Optometry and Vision Research, Weinheim, Germany. ovr@heiko-pult.de
Wang, Qinmei, et al. "A comprehensive assessment of the precision and agreement of anterior corneal power measurements obtained using 8 different devices." PLoS One 7.9 (2012): e45607.

Author information: Department of Ophthalmology, School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical College, Wenzhou, Zhejiang, China.
Simonini, Irene, and Anna Pandolfi. "Customized finite element modelling of the human cornea." PloS one 10.6 (2015): e0130426.

Author information Dipartimento di Matematica, Politecnico di Milano, Milano, Italy. 2 Dipartimento di Ingegneria Civile ed Ambientale, Politecnico di Milano, Milano, Italy.
Savini, Giacomo, et al. "Intraocular lens power calculation by ray-tracing after myopic excimer laser surgery." American journal of ophthalmology 157.1 (2014): 150-153.

Author information: Giovanni Battista Bietti Foundation, Istituto di Ricerca e Cura a Carattere Scientifico, Rome, Italy. Electronic address: giacomo.savini@alice.it. 2 Casa di Cura San Camillo, Forte dei Marmi, Italy. 3 Studio Oculistico d'Azeglio, Bologna, Italy. 4 Giovanni Battista Bietti Foundation, Istituto di Ricerca e Cura a Carattere Scientifico, Rome, Italy. 5 Jules Stein Eye Institute, University of California, Los Angeles, Los Angeles, California, and St. Mary's Eye Center, Santa Monica, California.
A Case of Artificial Snow Foam induced Corneal Endotheliitis Followed up by Scheimpflug Densitometry
Author information
Amr MOUNIR; Omar Fawzy ZIDAN; Islam AWNY; Engy Mohamed MOSTAFA
Intraocular Lens Power Calculation by Ray-Tracing after Myopic Excimer Laser Surgery
Author information
Giacomo savini, andrea bedei, piero barboni, pietro ducoli, and kenneth j. Hoffer
Accuracy of corneal power measurements by a new Scheimpflug camera combined with Placido-disk corneal topography for intraocular lens power calculation in unoperated eyes
Author information
Giacomo Savini , Piero Barboni, Michele Carbonelli, Kenneth J Hoffer
Anterior chamber depth measurements using Scheimpflug imaging and optical coherence tomography: repeatability, reproducibility, and agreement
Author information
Qinmei Wang , Xixia Ding , Giacomo Savini , Hao Chen , Yifan Feng1, Chao Pan , Yanjun Hua , Jinhai Huang
Corneal ray tracing versus simulated keratometry for estimating corneal power changes after excimer laser surgery
Author information
Giacomo Savini , Antonio Calossi , Massimo Camellin , Francesco Carones , Marco Fantozzi , Kenneth J Hoffer
Evaluation of corneal thickness using a Scheimpflug-Placido disk corneal analyzer and comparison with ultrasound pachymetry in eyes after laser in situ keratomileusis
Author information
Jinhai Huang , Weicong Lu, Giacomo Savini, Liang Hu, Chao Pan, Jing Wang, Weina Tan, Jia Chen, Qinmei Wang
Influence of posterior corneal astigmatism on total corneal astigmatism in eyes with moderate to high astigmatism
Author information
Giacomo Savini , Francesco Versaci , Gabriele Vestri , Pietro Ducoli , Kristian Næser
Intrasubject repeatability in keratoconus-eye measurements obtained with a new Scheimpflug photography-based system
Author information
Raúl Montalbán , Jorge L Alió, Jaime Javaloy, David P Piñero
Intrasubject repeatability of corneal morphology measurements obtained with a new Scheimpflug photography-based system
Author information
Raúl Montalbán , David P Piñero, Jaime Javaloy, Jorge L Alió
Precision of a new Scheimpflug and Placido-disk analyzer in measuring corneal thickness and agreement with ultrasound pachymetry
Author information
Jinhai Huang , Giacomo Savini, Liang Hu, Kenneth J Hoffer, Weicong Lu, Yifan Feng, Feng Yang, Xiuli Hu, Qinmei Wang
Repeatability of automatic measurements by a new Scheimpflug camera combined with Placido topography
Author information
Giacomo Savini , Piero Barboni, Michele Carbonelli, Kenneth J Hoffer
Scheimpflug-Placido topographer and optical low-coherence reflectometry biometer: repeatability and agreement
Author information
Wuhe Chen , Colm McAlinden, Konrad Pesudovs, Qinmei Wang, Fan Lu, Yifan Feng, Jie Chen, Jinhai Huang
Anterior chamber and aqueous depth measurement in pseudophakic eyes: agreement between ultrasound biometry and scheimpflug imaging
Author information
Giacomo Savini , Kenneth J Hoffer, Michele Carbonelli
Use of a support vector machine for keratoconus and subclinical keratoconus detection by topographic and tomographic data
Author information
Maria Clara Arbelaez , Francesco Versaci, Gabriele Vestri, Piero Barboni, Giacomo Savini
A Comparison between Scheimpflug imaging and optical coherence tomography in measuring corneal thickness
Author information
Jinhai Huang , Xixia Ding, Giacomo Savini, Chao Pan, Yifan Feng, Dan Cheng, Yanjun Hua, Xiuli Hu, Qinmei Wang
A review of meibography
Author information
Heiko Pult , Jason J Nichols
Customized Finite Element Modelling of the Human Cornea
Author information
Irene Simonini, Anna Pandolfi

TECHNICAL DATA

Data transfer Firewire
Power supply external power source 24 VCC In: 100-240Vac - 50/60Hz - 0.9-05A - Out: 24Vdc - 40W
Power net cable IEC C14 plug
Dimensions (HxDxW) 515 x 315 x 255mm
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
   
LIGHT SOURCES  
Placido disk Led @635nm
Scheimpflug Led @475nm UV-free
Pupillography Led @875nm
   
TOPOGRAPHY  
Placido disk rings 22
Measured points 21632 (front surface) 16000 (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)
   
MINIMUM SYSTEM REQUIREMENT  
PC: 4 GB RAM - Scheda Video 1 GB RAM (non condivisa) risoluzione 1024 x 768 pixels - Firewire port. Sistema operati vo: Windows XP, Windows 7 e Windows 10 (32/64 bit).