Transcript COMPARING CENTRAL CORNEAL THICKNESS MEASUREMENTS USING

COMPARING CENTRAL CORNEAL
THICKNESS MEASUREMENTS USING
VISANTE OCT, PENTACAM AND GALILEI
Bernilla E; Izquierdo Jr. L; Miranda M.
Authors have no financial interest
Instituto de Ojos OFTALMOSALUD
Lima-Perú
OBJECTIVE
To compare de central corneal thickness
measurements found using non contact
methods as are Visante OCT, Pentacam and
Galilei.
MATERIALS AND METHODS
• Prospective, comparative, and double blinded study
measuring central corneal thickness on 50 eyes of
25 patients being evaluated for refractive surgery.
The measurements were taken by three different
researchers without knowing the previous results
obtained by the other devices.
• We analyzed the thickness averages, maximum and
minimum values, and their standard deviations. The
statistical analysis was made using ANOVA testing
and SPSS v 15.
RESULTS
Our subjects mean age was 30.8 (SD=5.736). The
central thickness average for Visante OCT was
530.02 ± 30.682, for Pentacam was 554.76 ± 32.028,
and for Galilei was 562.38 ± 29.21. When comparing
the three devices we found that there’s a statistical
difference between the measurements (p=0.000),
and when comparing Pentacam vs Galilei that
difference is not found (p=0.648).
RESULTS
570
562
560
555
550
540
530
Mean
530
520
Visante
Pentacam
Galilei
The central thickness average for Visante OCT was 530.02 ± 30.682, for
Pentacam was 554.76 ± 32.028, and for Galilei was 562.38 ± 29.21
RESULTS
Multiple Comparisons
Dependent Variable: VI_PE_GA
Bonferroni
(I) GRUPO
visante
pentacam
galilei
(J) GRUPO
pentacam
galilei
visante
galilei
visante
pentacam
Mean
Difference
(I-J)
-24.74*
-32.36*
24.74*
-7.62
32.36*
7.62
Std. Error
6.133
6.133
6.133
6.133
6.133
6.133
Sig.
.000
.000
.000
.648
.000
.648
95% Confidence Interval
Lower Bound
Upper Bound
-39.59
-9.89
-47.21
-17.51
9.89
39.59
-22.47
7.23
17.51
47.21
-7.23
22.47
*. The mean difference is significant at the .05 level.
Mean of corneal thickness measurement value was not statistically
significant comparing the three devices.
CONCLUSION
Our subjects mean age was 30.8 (SD=5.736). The
central thickness average for Visante OCT was
530.02 ± 30.682, for Pentacam was 554.76 ± 32.028,
and for Galilei was 562.38 ± 29.21. When comparing
the three devices we found that there’s a statistical
difference between the measurements (p=0.000),
and when comparing Pentacam vs Galilei that
difference is not found (p=0.648).