Axial length association with corneoscleral sagittal height and scleral asymmetry.

Autor: Martínez-Plaza E; Group of Optics and Visual Perception, Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain.; University of Valladolid, Valladolid, Spain., López-de la Rosa A; Department of Theoretical Physics, Atomic and Optics, University of Valladolid, Valladolid, Spain.; Instituto de Oftalmobiología Aplicada (IOBA), University of Valladolid, Valladolid, Spain., Molina-Martín A; Group of Optics and Visual Perception, Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain., Bataille L; Visitrain S.L., Science Park of the University of Alicante, Alicante, Spain., Piñero DP; Group of Optics and Visual Perception, Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain.; Visitrain S.L., Science Park of the University of Alicante, Alicante, Spain.; Department of Ophthalmology, Vithas Medimar International Hospital, Alicante, Spain.
Jazyk: angličtina
Zdroj: Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) [Ophthalmic Physiol Opt] 2025 Jan; Vol. 45 (1), pp. 152-159. Date of Electronic Publication: 2024 Oct 03.
DOI: 10.1111/opo.13402
Abstrakt: Purpose: To determine how corneoscleral geometry changes with axial length and to assess the usefulness of including the sagittal configuration of the anterior segment when predicting the axial length.
Methods: An observational study was performed including 96 healthy subjects (96 eyes). Axial length was calculated from optical biometry (IOL Master 500). Corneal curvature and scleral sagittal height parameters at 13, 14 and 15 mm were obtained automatically using corneoscleral topography (eye surface profiler; ESP). In addition, corneal and scleral sagittal heights at numerous locations (21 radii: 0-10 mm from the corneal apex at 12 angles: 0-330°) were calculated using the raw height data extracted from the ESP. The relationships between axial length and the study parameters were analysed using Pearson correlation analysis. The equations for the prediction of axial length were obtained by fitting multiple linear regression models.
Results: The temporal-nasal scleral asymmetry at 13-, 14- and 15-mm chord lengths was significantly correlated with axial length (r 2  ≤ 0.26; p < 0.001). Significant inverse correlations were found between the temporal scleral sagittal height and axial length (r 2  ≤ 0.28; p ≤ 0.02). The nasal scleral sagittal height was not associated with axial length. Three significant multiple linear regression models were fitted based on spherical equivalent, corneal radius and scleral asymmetry at 13 (r 2  = 0.79; p < 0.001), 14 (r 2  = 0.80; p < 0.001) and 15 (r 2  = 0.80; p < 0.001) mm chord lengths.
Conclusions: Larger ocular globes show reduced temporal-nasal scleral asymmetry, mainly due to the lower sagittal height of the temporal sclera. Thus, the geometry of the temporal scleral may be a factor of interest during myopia progression.
(© 2024 The Author(s). Ophthalmic and Physiological Optics published by John Wiley & Sons Ltd on behalf of College of Optometrists.)
Databáze: MEDLINE
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