Corneal sublayer thickness in patients with pseudoexfoliation syndrome evaluated by anterior segment optical coherence tomography
- 11 Downloads
The aim of the study was to evaluate the thickness of each corneal sublayer in patients with pseudoexfoliation syndrome (PXS).
The study’s sample consisted of the 74 eyes of 74 patients with PXS (group 1) and the 80 eyes of 80 individuals without PXS (group 2). Each participant was performed anterior segment optical coherence tomography (AS-OCT) and Pentacam–Scheimpflug imaging. The thicknesses of corneal epithelium, Bowman’s layer, stroma, and Descemet membrane–endothelial complex were measured separately from the AS-OCT images, on the central, 2 mm superior and inferior of the cornea. Central corneal thickness (CCT), apical corneal thickness (ACT), thinnest corneal thickness (TCT), and corneal volume were also evaluated.
According to the measurements of corneal topography, in group 1 versus group 2, mean CCT (529.85 ± 32.33 µm vs 551.36 ± 39.12 µm, p < 0.001), mean ACT (532.21 ± 35.56 µm vs 552.26 ± 49.24 µm, p < 0.001), and mean TCT (527.54 ± 51.45 µm vs 546.20 ± 49.20 µm, p = 0.002) were significantly thinner in group 1. In AS-OCT, the thickness of the epithelium, stroma, and Descemet membrane–endothelial complex in the central, inferior, and superior cornea were significantly thinner in group 1 than in group 2. However, the thickness of Bowman’s layer did not significantly differ between the groups.
Our results indicate that all corneal sublayers except Bowman’s layer were thinner in eyes with PXS than in healthy ones. Therefore, caution should be exercised for corneal involvement in patients with PXS.
KeywordsPseudoexfoliation syndrome Anterior segment optical coherence tomography Corneal sublayer Epithelium Stroma
No author has a financial or proprietary interest in any material or method mentioned.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
Informed consent was obtained from all individual participants included in the study.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
- 8.Zheng X, Sakai H, Goto T, Namiguchi K, Mizoue S, Shiraishi A, Sawaguchi S, Ohashi Y (2011) Anterior segment optical coherence tomography analysis of clinically unilateral pseudoexfoliation syndrome: evidence of bilateral involvement and morphologic factors related to asymmetry. Invest Ophthalmol Vis Sci 52(8):5679–5684CrossRefGoogle Scholar
- 9.Fernández-Vigo JI, García-Feijóo J, Martínez-de-la-Casa JM, García-Bella J, Arriola-Villalobos P, Fernández-Pérez C, Fernández-Vigo JÁ (2016) Fourier domain optical coherence tomography to assess the iridocorneal angle and correlation study in a large Caucasian population. BMC Ophthalmol 16(1):42CrossRefGoogle Scholar
- 12.Urbaniak D, Seredyka-Burduk M, Błoch W, Malukiewicz G, Kałuzny BJ (2018) Scheimpflug camera measurement of optical density of the corneal epithelium, stroma, and endothelium in patients with pseudoexfoliation syndrome. Med Sci Monit Int Med J Exp Clin Res 24:5826Google Scholar