Corneal higher order aberrations in beta-thalassemia major Original research study
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Abstract
Purpose: This study aimed at evaluating the corneal higher order aberrations in beta-thalassemia major cases and comparing it to the healthy individuals.
Material and methods: It was a comparative cross-sectional study conducted on 56 beta-thalassemia major cases and 64 healthy controls from December 2023 to June 2024. All the participants received a standard ophthalmological examination subsequently followed by measurement of corneal higher order aberrations using Corneal Topography Galilei G5.
Results: The mean age of the cases and controls was comparable (P = 0.190). All the corneal higher order aberrations were significantly different among cases and controls (P <0.05), except for total coma, horizontal come, and spherical aberrations (P >0.05). Only fifth order aberrations were weakly positively correlated to thalassemia duration (r = 0.28, P = 0.033). The fourth order and spherical aberrations were weakly negatively correlated to hemoglobin levels (P = 0.029, P = 0.012 respectively). The fifth and sixth order aberrations were significantly different among the patients undergoing monotherapy and combined therapy (P = 0.006, P = 0.022 respectively).
Conclusions: Corneal higher order aberrations are greater in beta-thalassemia major cases potentially due to disease and its treatment-related factors. The findings of the study focuses the need for regular ocular monitoring in these patients to lessen potential visual disturbances and improve ocular health.
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Address reprint requests to: Medical Education, Marcin Kuźma (marcin.kuzma@mededu.pl)
References
2. Salman A, Ghabra M, Darwish TR et al. Corneal higher-order aberration changes after accelerated cross-linking for keratoconus. BMC Ophthalmol. 2022; 22(1): 225.
3. Salman A, Kailani O, Ghabra M et al. Corneal higher order aberrations by Sirius topography and their relation to different refractive errors. BMC Ophthalmol. 2023; 23(1): 104.
4. Kiuchi G, Hiraoka T, Ueno Y et al. Influence of refractive status and age on corneal higher-order aberration. Vision Res. 2021; 181: 32-7.
5. Li J, Xue C, Zhang Y et al. Diagnostic value of corneal higher-order aberrations in keratoconic eyes. Int Ophthalmol. 2023; 43(4): 1195-206.
6. Kandel S, Chaudhary M, Mishra SK et al. Evaluation of corneal topography, pachymetry and higher order aberrations for detecting subclinical keratoconus. Ophthalmic Physiol Opt J Br Coll Ophthalmic Opt Optom. 2022; 42(3): 594-608.
7. Wallerstein A, Gauvin M, Mimouni M et al. Keratoconus Features on Corneal Higher-Order Aberration Ablation Maps: Proof-of-Concept of a New Diagnostic Modality. Clin Ophthalmol Auckl NZ. 2021; 15: 623-33.
8. Erdinest N, London N, Landau D et al. Higher order aberrations in keratoconus . Int Ophthalmol. 2024; 44(1): 1-16.
9. Bolac R, Yildiz E, Balci S. Anterior Corneal High-order Aberrations in Fuchs’ Endothelial Corneal Dystrophy Classified by Scheimpflug Tomography. Optom Vis Sci. 2023; 100(2): 151.
10. Ning R, Huang X, Jin Y et al. Corneal Higher-Order Aberrations Measurements: Precision of SD-OCT/Placido Topography and Comparison with a Scheimpflug/Placido Topography in Eyes After Small-Incision Lenticule Extraction. Ophthalmol Ther. 2023; 12(3): 1595-610.
11. Zhou S, Chen X, Ortega-Usobiaga J et al. Characteristics and influencing factors of corneal higher-order aberrations in patients with cataract. BMC Ophthalmol. 2023; 23(1): 313.
12. Wu T, Wang Y, Li Y et al. The impact of corneal higher-order aberrations on dynamic visual acuity post cataract surgery. Front Neurosci. 2024; 18: 1321423.
13. Ortiz-Toquero S, Fernandez I, Martin R. Classification of Keratoconus Based on Anterior Corneal High-order Aberrations: A Cross-validation Study. Optom Vis Sci. 2020; 97(3): 169.
14. Koh S, Inoue R, Maeno S et al. Characteristics of Higher-Order Aberrations in Different Stages of Keratoconus. Eye Contact Lens. 2022; 48(6): 256.
15. Kohnen T, Mahmoud K, Bühren J. Comparison of Corneal Higher-Order Aberrations Induced by Myopic and Hyperopic LASIK. Ophthalmology. 2005; 112(10): 1692.e1-1692.e11.
16. Rudolph M, Laaser K, Bachmann BO et al. Corneal Higher-Order Aberrations after Descemet’s Membrane Endothelial Keratoplasty. Ophthalmology. 2012; 119(3): 528-35.
17. Shimizu E, Yamaguchi T, Yagi-Yaguchi Y et al. Corneal Higher-Order Aberrations in Infectious Keratitis. Am J Ophthalmol. 2017; 175: 148-58.
18. Yagi-Yaguchi Y, Yamaguchi T, Okuyama Y et al. Corneal Higher Order Aberrations in Granular, Lattice and Macular Corneal Dystrophies. PLOS ONE. 2016; 11(8): e0161075.
19. Bruzzese A, Martino EA, Mendicino F et al. Iron chelation therapy. Eur J Haematol. 2023; 110(5): 490-7.
20. Aksoy A, Aslan L, Aslankurt M et al. Retinal fiber layer thickness in children with thalessemia major and iron deficiency anemia. Semin Ophthalmol. 2014; 29(1): 22-6.
21. Haghpanah S, Zekavat OR, Safaei S et al. Optical coherence tomography findings in patients with transfusion-dependent β-thalassemia. BMC Ophthalmol. 2022; 22: 279.
22. Uzun F, Karaca EE, Yıldız Yerlikaya G et al. Retinal nerve fiber layer thickness in children with β-thalassemia major. Saudi J Ophthalmol Off J Saudi Ophthalmol Soc. 2017; 31(4): 224-8.
23. Acer S, Balcı YI, Pekel G, Ongun TT et al. Retinal nerve fiber layer thickness and retinal vessel calibers in children with thalassemia minor. SAGE Open Med. 2016; 4: 2050312116661683.