Description of a new method to calculate the equator of the crystalline lens using AS-OCT images: Accuracy in non-dilated measurements
Ramos Arizcuren, Ana (Universidad de Zaragoza) ; Jiménez-García, Marta (Universidad de Zaragoza) ; Castro-Alonso, Francisco J. (Universidad de Zaragoza) ; Consejo, Alejandra (Universidad de Zaragoza)
Resumen: Objective: To establish a methodology for objectively estimating the Lens Equatorial Plane (LEP) from clinical images, comparing LEP with dilated versus non‐dilated pupils.
Methods: A cohort of 91 eyes from 60 patients undergoing preoperative assessments for cataract surgery was evaluated. Anterior Segment Optical Coherence Tomography (AS‐OCT) images were analysed under conditions of pharmacologically induced pupil dilation versus a non‐dilated pupil. Geometrical parameters, including LEP, intersection diameter (ID), lens thickness (LT), anterior and posterior lens thickness were automatically calculated by applying standard image processing techniques to clinical AS‐OCT images.
Results: Significant differences in lens parameters, including LEP, were observed between dilated and non‐dilated conditions (all p < 0.001). A strong linear correlation was found across all geometrical variables under both conditions (r[LEP] = 0.64, r[ID] = 0.78, r[LT] = 0.99, all p < 0.001); enabling reliable correction of these differences.
Conclusion: The study introduces an objective methodology for LEP calculation, emphasising the need to consider the eye's physiological state during preoperative measurements. Incorporating LEP into future intraocular lens (IOL) power calculation formulas and replacing the habitual effective lens position may potentially improve the accuracy of IOL power estimation and thus postoperative visual outcomes.
Idioma: Inglés
DOI: 10.1111/opo.13353
Año: 2024
Publicado en: OPHTHALMIC AND PHYSIOLOGICAL OPTICS 44, 6 (2024), 1107-1113
ISSN: 0275-5408
Tipo y forma: Article (Published version)
Área (Departamento): Área Física Aplicada (Dpto. Física Aplicada)
Área (Departamento): Área Oftalmología (Dpto. Cirugía)
Área (Departamento): Área Óptica (Dpto. Física Aplicada)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material.
Exportado de SIDERAL (2024-08-29-11:26:06)
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Methods: A cohort of 91 eyes from 60 patients undergoing preoperative assessments for cataract surgery was evaluated. Anterior Segment Optical Coherence Tomography (AS‐OCT) images were analysed under conditions of pharmacologically induced pupil dilation versus a non‐dilated pupil. Geometrical parameters, including LEP, intersection diameter (ID), lens thickness (LT), anterior and posterior lens thickness were automatically calculated by applying standard image processing techniques to clinical AS‐OCT images.
Results: Significant differences in lens parameters, including LEP, were observed between dilated and non‐dilated conditions (all p < 0.001). A strong linear correlation was found across all geometrical variables under both conditions (r[LEP] = 0.64, r[ID] = 0.78, r[LT] = 0.99, all p < 0.001); enabling reliable correction of these differences.
Conclusion: The study introduces an objective methodology for LEP calculation, emphasising the need to consider the eye's physiological state during preoperative measurements. Incorporating LEP into future intraocular lens (IOL) power calculation formulas and replacing the habitual effective lens position may potentially improve the accuracy of IOL power estimation and thus postoperative visual outcomes.
Idioma: Inglés
DOI: 10.1111/opo.13353
Año: 2024
Publicado en: OPHTHALMIC AND PHYSIOLOGICAL OPTICS 44, 6 (2024), 1107-1113
ISSN: 0275-5408
Tipo y forma: Article (Published version)
Área (Departamento): Área Física Aplicada (Dpto. Física Aplicada)
Área (Departamento): Área Oftalmología (Dpto. Cirugía)
Área (Departamento): Área Óptica (Dpto. Física Aplicada)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material. Exportado de SIDERAL (2024-08-29-11:26:06)
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Este artículo se encuentra en las siguientes colecciones:
Articles > Artículos por área > Física Aplicada
Articles > Artículos por área > Oftalmología
Articles > Artículos por área > Optica
Record created 2024-07-31, last modified 2024-08-29