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Corneal topography, anterior segment and high-order aberration assessments in children with ≥ 2 diopter astigmatism

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Abstract

Purpose

To assess topographic findings, anterior segment parameters and high-order aberrations (HOAs) by using corneal tomography in children with 2 diopters (dp) or more astigmatism.

Methods

Children with 2 dp or more astigmatism (study group) and children with astigmatism less than 1 dp (control group) were recruited. Corneal astigmatism, mean, steep, flat keratometry (K) findings, anterior and posterior K results and anterior segment parameters including anterior chamber depth, kappa distance, horizontal corneal diameter, mean, central, middle, peripheral corneal thicknesses (CT), white-to-white (WTW) distance and pupil diameter were measured by Galilei G4 Dual Scheimpflug corneal tomography. HOAs were also assessed and compared between groups.

Results

Fifty-eight eyes of 37 children in the study group and 37 eyes of 37 children in the control group were enrolled. The mean ages of groups were 9.7 ± 2.4 years and 9.3 ± 1.6 years in study and control groups, respectively. The mean astigmatism was 3.3 ± 1.1 dp and 0.5 ± 0.3 dp in study and control groups, respectively (p < 0.05). Total corneal astigmatism was 3.3 ± 0.84 dp and 1.14 ± 0.47 dp in study and control groups, respectively (p < 0.05). There was a significant difference between groups in terms of posterior steep K and posterior astigmatism values. Among anterior segment parameters, mean CT and WTW values were statistically different between groups. HOAs were found to be statistically different between groups.

Conclusion

Higher posterior corneal astigmatism, thinner mean CT and lower WTW distance were found in children with 2 dp or more astigmatism. Besides, HOAs were much more in these astigmatic children.

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Funding

This study was not funded by any company.

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Authors and Affiliations

  1. Sakarya University Education and Research Hospital, Sakarya, Turkey

    Burçin Çakır, Nilgün Özkan Aksoy, Sedat Özmen, Özlem Bursalı & Erkan Çelik

  2. Tekirdağ Namık Kemal University, Tekirdağ, Turkey

    Fatih Horozoğlu

Authors
  1. Burçin Çakır
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  2. Nilgün Özkan Aksoy
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  3. Sedat Özmen
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  4. Özlem Bursalı
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  5. Erkan Çelik
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  6. Fatih Horozoğlu
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Correspondence to Burçin Çakır.

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All authors declare that they have no conflict of interest.

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Prior approval from the Sakarya University Institutional Review Board (IRB: 71522473/050.01.04/331) was taken. The study was performed in adherence to the 1964 Declaration of Helsinki.

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Written informed consent was obtained from the parents of each subject in the study.

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Çakır, B., Aksoy, N.Ö., Özmen, S. et al. Corneal topography, anterior segment and high-order aberration assessments in children with ≥ 2 diopter astigmatism. Int Ophthalmol 40, 1461–1467 (2020). https://doi.org/10.1007/s10792-020-01313-8

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  • DOI: https://doi.org/10.1007/s10792-020-01313-8

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