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A. J. Cariello, E. P. F. Costa, F. H. C. Casanova, D. Bagiossi, A. L. Hofling-Lima; Comparative analysis of the nuclear lens opacification by Oculus Pentacam and Lens Opacities Classification System (LOCS III). Invest. Ophthalmol. Vis. Sci. 2007;48(13):5436.
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© ARVO (1962-2015); The Authors (2016-present)
To compare the nuclear lens density acquired by Pentacam Scheimpflug imaging to Lens Opacities Classification System III (LOCS III).
Based on LOCS III, sixty eyes were chosen with different nuclear lens opacification grades and divided in six groups of ten eyes each one. The group 1 included nuclear opacity graduated between 1.0 to 1.9; the group 2 included nuclear opacity graduated between 2.0 to 2.9; the group 3 included nuclear opacity graduated between 3.0 to 3.9; the group 4 included nuclear opacity graduated between 4.0 to 4.9; the group 5 included nuclear opacity graduated between 5.0 to 5.9 and the group 6 included nuclear opacity graduated between 6.0 to 6.9. All eyes were submitted to the Pentacam examination. The Pentacam Scheimpflug image and the values provided by the graphic of lens density were compared among the different groups. The mean difference, standard deviation (SD) and 95% limits of agreement were calculated.
The study was composed by 15 males and 21 females ranging from 52 to 84 years of age (mean, 69.36 ± 8.22 years). There was no significant difference regarding gender (p=0.820) and age (p=0.218). The mean lens density by Pentacam Scheimpflug imaging in the group 1 was 10.71 ± 1.00, in the group 2 was 15.23 ± 2.93, in the group 3 was 18.39 ± 5.46, in the group 4 was 19.92 ± 5.06, in the group 5 was 22.84 ± 4.36 and in the group 6 was 23.78 ± 6.18. There was a significant difference among the groups and a positive correlation between the LOCS III analysis and lens density acquired by Pentacam Scheimpflug imaging (p<0.005).
There is a direct correlation between LOCS III and the graphic of lens density acquired by Pentacam Scheimpflug imaging, especially in low grades nuclear opacities.
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