![Page 1: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/1.jpg)
ALADDIN / OA 2000 / ARGOS
PRECISION / AGREEMENT STUDY
IOL POWER CLUB
NEW ORLEANS
2016
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TIME DOMAIN
FOURIER DOMAIN: SPECTRAL
FOURIER DOMAIN: SWEPT SOURCE
- Moving mirror
in the reference arm
- Stationary mirror
in the reference arm
- Spectrometer
- Stationary mirror
in the reference arm
- Swept source laser
IOL MASTER 700
ZEISS
ARGOS
MOVU
OA 2000
TOMEY
IOL MASTER 500LENSTAR
LS900
ALADDIN
OA 1000AL SCAN
ZEISSHAAG STREIT
TOPCON
TOMEYNIDEK
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CORNEA
PLACIDO DISK
TOPOGRAPHY
PLACIDO CONE
TOPOGRAPHY
VIDEO KERATOMETRY
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METHODS
■ 27 eyes of 27 people: Patients attending BEGITEK Clinic for
cataract surgery / RLE
■ No eye pathology
■ 2 PRK cases (K>40)
■ Age: 68.89 ± 8.45 yo
■ Males: 10; Females: 17
■ 14 LE and 13 RE
■ Prospective and randomized:
- Eye to be explored
- Order of device
■ 1 expert explorer. Informed consent was signed
■ 3 consecutive measurements were performed with each
device
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METHODS
DATA ANALYSISDATA ANALYSIS
REPEATABILITY
Sw : Wthin subject standard deviation (square root of mean variance)
Precision: 1.96Sw : Half range of 95 % of population data
Repeatability: 2.77Sw : Highest absolute difference between 95 % of pair
of observations
Coefficient of Variation: 100 Sw / Mean
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METHODS
DATA ANALYSISDATA ANALYSIS
AGREEMENT
Bland Altman plots
One way ANOVA test for means comparison
■ Measurement:
1ST measurement was used for agreement analysis
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METHODS
ANALYSED DATAANALYSED DATA
CORNEA:
- K flat (K 1)
- K steep (K 2)
-Axis steep
-Sim K
-Astigmatism
-K power vectors: J0, J45
(as defined by Thibos)
AXIOMETRY HWTW
- AXL
- CCT
- ACD
- LT
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RESULTS
REPEATABILITY
![Page 9: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/9.jpg)
MEAN ±±±±
SDSw Precision Repeatability CV
AXL
Aladdin23.73 ±±±±
1.44
0.02
0.04 0.06 0.09
OA2000
23.73 ±±±±
1.450.01
0.02 0.03 0.05
Argos23.71 ±±±±
1.410.01
0.01 0.02 0.03
n=27
AXIAL LENGTH
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MEAN ±±±±
SDSw Precision Repeatability CV
AXL
Aladdin23.73 ±±±±
1.44
0.02
0.04 0.06 0.09
OA2000
23.73 ±±±±
1.450.01
0.02 0.03 0.05
Argos23.71 ±±±±
1.410.01
0.01 0.02 0.03
n=27
AXIAL LENGTH
MEAN ±±±±
SDSw Precision Repeatability CV
AXL
Aladdin23.39 ±±±±
1.35
0.02
0.05 0.07 0.10
OA2000
23.40 ±±±±
1.350.01
0.03 0.04 0.06
IOL
Master
700
23.40 ±±±±
1.35 0.01 0.01 0.02 0.03
n=32
San Sebastian
2015
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Sw PrecisionRepeatab
ilityCV
AXL
NORMALS
IOL
Master 50.03 0.07 0.10 0.14
Lenstar 0.02 0.04 0.06 0.09
AXL
CATARACTS
IOL
Master 50.04 0.08 0.11 0.17
Lenstar 0.01 0.03 0.04 0.06
n=35
n=37
MEAN ±±±±
SDSw Precision Repeatability CV
AXL
Aladdin23.73 ±±±±
1.44
0.02
0.04 0.06 0.09
OA2000
23.73 ±±±±
1.450.01
0.02 0.03 0.05
Argos23.71 ±±±±
1.410.01
0.01 0.02 0.03
n=27
AXIAL LENGTH
Wurzburg
2011
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MEAN ±±±±
SDSw Precision Repeatability CV
AXL
Aladdin23.73 ±±±±
1.44
0.02
0.04 0.06 0.09
OA2000
23.73 ±±±±
1.450.01
0.02 0.03 0.05
Argos23.71 ±±±±
1.410.01
0.01 0.02 0.03
n=27
AXIAL LENGTH
Example:
23.50 mm
95 % of cases will be +/-
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AXIAL LENGTH
Example:
23.50 mm
95 % of cases will be +/-
MEAN ±±±±
SDSw Precision Repeatability CV
AXL
Aladdin23.73 ±±±±
1.44
0.02
0.04 0.06 0.09
OA2000
23.73 ±±±±
1.450.01
0.02 0.03 0.05
Argos23.71 ±±±±
1.410.01
0.01 0.02 0.03
n=27
ARGOS: 23.49 – 23.51
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AXIAL LENGTH
Example:
23.50 mm
95 % of cases will be +/-
OA2000: 23.48 – 23.52
ARGOS: 23.49 – 23.51
MEAN ±±±±
SDSw Precision Repeatability CV
AXL
Aladdin23.73 ±±±±
1.44
0.02
0.04 0.06 0.09
OA2000
23.73 ±±±±
1.450.01
0.02 0.03 0.05
Argos23.71 ±±±±
1.410.01
0.01 0.02 0.03
n=27
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AXIAL LENGTH
Example:
23.50 mm
95 % of cases will be +/-
ALADDIN: 23.46 – 23.54
OA2000: 23.47 – 23.53
MEAN ±±±±
SDSw Precision Repeatability CV
AXL
Aladdin23.73 ±±±±
1.44
0.02
0.04 0.06 0.09
OA2000
23.73 ±±±±
1.450.01
0.02 0.03 0.05
Argos23.71 ±±±±
1.410.01
0.01 0.02 0.03
n=27
ARGOS: 23.49 – 23.51
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MEAN ±±±±
SDSw Precision Repeatability CV
Sim K
Aladdin43.26 ±±±±
1.910.13 0.26 0.37 0.31
OA2000
43.13 ±±±±
1.71 0.07 0.13 0.18 0.15
Argos43.30 ±±±±
1.96 0.13 0.26 0.37 0.31
n=27
SIM K
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MEAN ±±±±
SDSw Precision Repeatability CV
Sim K
Aladdin43.26 ±±±±
1.910.13 0.26 0.37 0.31
OA2000
43.13 ±±±±
1.71 0.07 0.13 0.18 0.15
Argos43.30 ±±±±
1.96 0.13 0.26 0.37 0.31
n=27
SIM K
MEAN ±±±±
SDSw Precision Repeatability CV
AXL
Aladdin43.77 ±±±±
1.780.09 0.18 0.25 0.21
OA2000
43.86 ±±±±
1.81 0.11 0.22 0.31 0.25
IOL
Master
700
43.85 ±±±±
1.79 0.10 0.20 0.28 0.23
n=34
San Sebastian
2015
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MEAN ±±±±
SDSw Precision Repeatability CV
Sim K
Aladdin43.26 ±±±±
1.910.13 0.26 0.37 0.31
OA2000
43.13 ±±±±
1.71 0.07 0.13 0.18 0.15
Argos43.30 ±±±±
1.96 0.13 0.26 0.37 0.31
n=27
SIM K
n=32 SD ±±±± SD Sw Precision Repeatability CV
Sim K
IOL
Master 50.08±±±±0.09 0.12 0.23 0.32 0.26
Lenstar 0.09±±±±0.08 0.12 0.23 0.32 0.27
Wurzburg
2011
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SIM K
Example:
43.50 mm
95 % of cases will be +/-
MEAN ±±±±
SDSw Precision Repeatability CV
Sim K
Aladdin43.26 ±±±±
1.910.13 0.26 0.37 0.31
OA2000
43.13 ±±±±
1.71 0.07 0.13 0.18 0.15
Argos43.30 ±±±±
1.96 0.13 0.26 0.37 0.31
n=27
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SIM K
Example:
43.50 mm
95 % of cases will be +/-
MEAN ±±±±
SDSw Precision Repeatability CV
Sim K
Aladdin43.26 ±±±±
1.910.13 0.26 0.37 0.31
OA2000
43.13 ±±±±
1.71 0.07 0.13 0.18 0.15
Argos43.30 ±±±±
1.96 0.13 0.26 0.37 0.31
n=27
Argos: 43.26 – 43.76
Aladdin: 43.26 – 43.76
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SIM K
Example:
43.50 mm
95 % of cases will be +/-
MEAN ±±±±
SDSw Precision Repeatability CV
Sim K
Aladdin43.26 ±±±±
1.910.13 0.26 0.37 0.31
OA2000
43.13 ±±±±
1.71 0.07 0.13 0.18 0.15
Argos43.30 ±±±±
1.96 0.13 0.26 0.37 0.31
n=27
Argos: 43.26 – 43.76
OA2000: 43.37 – 43.63
Aladdin: 43.26 – 43.76
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How does this AXL and K variability
contribute to the whole IOL
calculation process variability?
Calculation of variability in refraction
prediction using Gaussian error propagation
analysis
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ALADDIN
OA 2000
ARGOSSoftware by W. Haigis
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MEAN ±±±±
SDSw Precision Repeatability CV
ACD
Aladdin3.17 ±±±±
0.380.02 0.04 0.06 0.70
OA2000
3.17 ±±±±
0.36 0.08 0.16 0.23 2.62
Argos3.11 ±±±±
0.39 0.01 0.03 0.04 0.50
n=27
ACD
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MEAN ±±±±
SDSw Precision Repeatability CV
ACD
Aladdin3.17 ±±±±
0.380.02 0.04 0.06 0.70
OA2000
3.17 ±±±±
0.36 0.08 0.16 0.23 2.62
Argos3.11 ±±±±
0.39 0.01 0.03 0.04 0.50
n=27
ACD
MEAN ±±±±
SDSw Precision Repeatability CV
ACD
Aladdin3.14 ±±±±
0.400.06 0.12 0.17 1.95
OA2000
3.09 ±±±±
0.41 0.14 0.28 0.40 4.64
IOL
Master
700
3.01 ±±±±
0.40 0.05 0.10 0.14 1.72
n=34
San Sebastian
2015
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MEAN ±±±±
SDSw Precision Repeatability CV
LT
Aladdin4.39 ±±±±
0.780.03 0.06 0.09 0.72
OA2000
4.58 ±±±±
0.32 0.08 0.16 0.23 1.88
Argos4.69 ±±±±
0.30 0.04 0.08 0.11 0.85
n=27
LT
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MEAN ±±±±
SDSw Precision Repeatability CV
LT
Aladdin4.39 ±±±±
0.780.03 0.06 0.09 0.72
OA2000
4.58 ±±±±
0.32 0.08 0.16 0.23 1.88
Argos4.69 ±±±±
0.30 0.04 0.08 0.11 0.85
n=27
LT
MEAN ±±±±
SDSw Precision Repeatability CV
LT
Aladdin4.54 ±±±±
0.390.07 0.14 0.20 1.58
OA2000
4.60 ±±±±
0.39 0.15 0.29 0.42 3.27
IOL
Master
700
4.58 ±±±±
0.38 0.03 0.07 0.10 0.77
n=34
San Sebastian
2015
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ASTIGMATISMn=27
MEAN ±±±± SD Sw PrecisionRepeatabilit
yCV
CYL
MAGNITUDE
Aladdin 0.74 ±±±± 0.43 0.17 0.34 0.49 23.63
OA20000.71 ±±±± 0.39
0.14 0.28 0.39 20.09
Argos 0.82 ±±±± 0.490.31 0.60 0.85 37.49
MEAN ±±±± SD Sw PrecisionRepeatabilit
yCV
J0
Aladdin -0.10 ±±±± 0.31 0.11 0.23 0.32 -120.74
OA2000-0.06 ±±±± 0.29
0.09 0.19 0.26 -148.24
Argos -0.06 ±±±± 0.280.16 0.31 0.44 -268.37
MEAN ±±±± SD Sw PrecisionRepeatabilit
yCV
J45
Aladdin -0.07 ±±±± 0.27 0.10 0.20 0.28 -156.64
OA2000-0.03 ±±±± 0.27
0.04 0.08 0.12 -128.21
Argos -0.10 ±±±± 0.360.13 0.25 0.36 -129.03
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MEAN ±±±±
SDSw Precision Repeatability CV
CCT
Aladdin
OA2000
538.51 ±±±±
34.43 4.18 8.20 11.59 0.77
Argos539.59 ±±±±
38.2 7.20 14.10 19.93 1.33
n=27
CCT
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MEAN ±±±±
SDSw Precision Repeatability CV
CCT
Aladdin
OA2000
538.51 ±±±±
34.43 4.18 8.20 11.59 0.77
Argos539.59 ±±±±
38.2 7.20 14.10 19.93 1.33
n=27
CCT
MEAN ±±±±
SDSw Precision Repeatability CV
CCT
Aladdin
OA2000
533.90 ±±±±
32.14 4.03 7.90 11.17 0.75
IOL
Master
700
545.36 ±±±±
33.34 1.91 3.75 5.3 0.35
n=34
San Sebastian
2015
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MEAN ±±±±
SDSw Precision Repeatability CV
CCT
Aladdin
OA2000
538.51 ±±±±
34.43 4.18 8.20 11.59 0.77
Argos539.59 ±±±±
38.2 7.20 14.10 19.93 1.33
n=27
CCT
Galilei G2 vs Pentacam HR
IPC meeting 2011 Wurzburg
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RESULTS
AGREEMENT
![Page 34: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/34.jpg)
AXIAL LENGTH
Bootstrap: 1000 samples; simple sampling; 95% conf. interv.
![Page 35: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/35.jpg)
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SIM K
Bootstrap: 1000 samples; simple sampling; 95% conf. interv.
![Page 37: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/37.jpg)
![Page 38: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/38.jpg)
ACD
Bootstrap: 1000 samples; simple sampling; 95% conf. interv.
![Page 39: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/39.jpg)
ALA: 3.41
ARGOS: 2.7
ALA: 3.41
OA2000: 2.71
OA2000: 3.28
ARGOS: 2.98
![Page 40: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/40.jpg)
ACD discrepancy case: Aladdin / Argos-OA2000
![Page 41: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/41.jpg)
LT
Bootstrap: 1000 samples; simple sampling; 95% conf. interv.
![Page 42: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/42.jpg)
ALA: 4.73
ARGOS: 5.3
ALA: 4.73
OA2000: 5.45
![Page 43: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/43.jpg)
CCT
Bootstrap: 1000 samples; simple sampling; 95% conf. interv.
![Page 44: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/44.jpg)
OA2000: 534
ALADDIN: 565
OA2000: 534
ALADDIN: 567
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ASTIGMATISM
![Page 46: ALADDIN / OA 2000 / ARGOS - Movu Inc. … · CV J0 Aladdin -0.10 ±±±0.31 0.11 0.23 0.32 -120.74 OA2000-0.06 ±±±0.29 0.09 0.19 0.26 -148.24 Argos -0.06 ±±±0.28 0.16 0.31 0.44](https://reader034.vdocuments.net/reader034/viewer/2022050314/5f765c2f13e0df36e237adfa/html5/thumbnails/46.jpg)
CONCLUSIONS
Good repeatibility of all measured variables
B scanners (Argos and OA2000) seem perform better
than A scanners in AXL
LT is the least precise for all of them
Agreement is very good: Interchangeable (minimum or
no IOL constant difference)
Impact of precision differences on IOL calculation is
neglectible