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Table 2 Basic study information

From: Sirius Scheimpflug–Placido versus ultrasound pachymetry for central corneal thickness: meta-analysis

Author Year Country Patients/Eyes Mean age ± SD
(years)
Gender ratio (M/F) Device manufacturer
       Sirius Ultrasound
Kara et al. [13] 2012 Turkey 30/30 28.0 ± 10.0 14/16 Sirius (CSO, Florence, Italy) DGH-550 (DGH Technology Inc., Exton, PA)
Huang et al. [9] 2013 China 43/43 27.5 ± 7.6 16/27 Sirius (CSO, Florence, Italy) SP-3000 (Tomey Corp.)
Jorge et al. [12] 2013 Portugal 50/50 36.7 ± 4.8 28/22 Sirius (CSO, Florence, Italy) SP100 (Tomey, Nagoya, Japan)
Bayhan et al. [11] 2014 Turkey 50/50 29.8 ± 5.0 23/27 Sirius (CSO, Florence, Italy) (Pacline, Optikon)
Maresca et al. [15] 2014 Italy 35/35 25.9 ± 6.7 10/25 Sirius (CSO, Florence, Italy) P-1 (Takagi Seiko Co., Ltd., Nagano, Japan)
Yildirim et al. [18] 2015 Turkey 34/34 23.2 ± 7.6 16/18 Sirius (CSO, Florence, Italy) DGH-550 (DGH Technology Inc., Exton, PA).
Pierro et al. [16] 2016 Italy 28/28 44.0 ± 10.6 8/20 Sirius (CSO, Florence, Italy) Pachmate DGH55 (DGH Instruments Inc., Exton, PA)
Simsek et al. [17] 2016 Turkey 128/256 33.2 ± 13.0 84/44 Sirius (CSO, Florence, Italy) OcuScan RxP Ophthalmic Ultrasound System (Alcon Laboratories)
Kumar et al. [14] 2017 India 46/46 24.1 ± 5.0 24/22 Sirius (CSO, Florence, Italy) SP-3000 (Tomey Corp.)
Kuddusi et al. [19] 2017 Turkey 76/76 38.6 ± 12.5 33/43 Sirius (CSO, Florence, Italy) Echoscan US-500
Mustafa et al. [20] 2018 Turkey 32/64 23.8 25/7 Sirius (CSO, Florence, Italy) Aviso A/B (Quantel Medical, France)
Nesrin et al. [21] 2018 Turkey 150/150 42.5 ± 17.0 67/83 Sirius (CSO, Florence, Italy) iPac ultrasonic pachymeter
  1. SD = standard deviation, CCT = central corneal thickness