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      Aberraciones corneales en pacientes con indicación de cirugía refractiva con láser de excímeros Translated title: Corneal Aberrations of Patients Indicated for Excimer Laser Refractive Surgery

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          Abstract

          RESUMEN Objetivo: Determinar las aberraciones corneales en pacientes con indicación de cirugía refractiva con láser de excímeros. Métodos: Se realizó un estudio retrospectivo, transversal, descriptivo, con 161 ojos de 81 pacientes adultos, de ambos sexos con indicación de cirugía con láser de excímeros para la corrección de su defecto refractivo. Se definieron como variables edad, sexo, desenfoque, astigmatismo, coma, trefoil y aberración esférica, las que se determinaron por el estudio topográfico de rutina con el topógrafo KeratronTM Scout, Optikon. Resultados: Se obtuvieron los siguientes valores promedios: desenfoque -4,17 ± 0,29 D (-16,15 a 8,5 D) y absoluto 4,94 ± 0,199 (10 a 16,5 D), astigmatismo -1,56 ± 0,09 D (-9,44 a -0,09 D), coma 0,25 ± 0,016 (0,01 a 1,5 D), trefoil 0,204 ± 0,016 (0,01 a 1,18 D) y aberración esférica 0,316 ± 0,018 D (0,0 a 1,27D). En el 75 % de los casos los valores absolutos de desenfoque fueron inferiores a 6,56, de astigmatismo inferior a 0,33 D, de coma menor que 0,33, trefoil inferior a 0,25 y aberraciones esféricas menores que 0,32 D. Conclusiones: Los valores promedio de las aberraciones corneales desenfoque, astigmatismo, coma, trefoil y aberración esférica se encuentran en el rango de los valores reportados en la literatura científica y la distribución de los valores de las aberraciones corneales presentan desplazamiento de la mayoría de los casos hacia los valores más bajo del rango de determinación.

          Translated abstract

          ABSTRACT Objective: To determine corneal aberrations in patients indicated for excimer laser refractive surgery. Methods: A retrospective, cross-sectional and descriptive study was carried out with 161 eyes of 81 adult patients of both sexes with indication of excimer laser surgery for the correction of their refractive defect. Age, sex, defocus, astigmatism, coma, trefoil and spherical aberration were defined as variables, determined by routine topographic study with the KeratronTM Scout topographer, Optikon. Results: The following average values were obtained: defocus of -4.17 ± 0.29 D (-16.15 to 8.5 D) and absolute of 4.94 ± 0.199 (10 to 16.5 D), astigmatism of -1.56 ± 0.09 D (-9.44 to -0.09 D), coma of 0.25 ± 0.016 (0.01 to 1.5 D), trefoil of 0.204 ± 0.016 (0.01 to 1.18 D) and spherical aberration of 0.316 ± 0.018 D (0.0 to 1.27D). In 75 % of the cases, the absolute values for defocus were lower than 6.56; for astigmatism, lower than 0.33 D; for coma, lower than 0.33; for trefoil, lower than 0.25; and for spherical aberrations, lower than 0.32 D. Conclusions: The average values of corneal aberrations for defocus, astigmatism, coma, trefoil and spherical aberration are in the range of values reported in the scientific literature, while the distribution of corneal aberrations values present displacement of most of the cases towards the lower values of the determination range.

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          World report on vision

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            Aberrations and retinal image quality of the normal human eye

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              Zernike circle polynomials and optical aberrations of systems with circular pupils.

              Zernike circle polynomials, their numbering scheme, and relationship to balanced optical aberrations of systems with circular pupils are discussed.
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                Author and article information

                Journal
                oft
                Revista Cubana de Oftalmología
                Rev Cubana Oftalmol
                Editorial Ciencias Médicas (Ciudad de la Habana, , Cuba )
                0864-2176
                1561-3070
                June 2023
                : 36
                : 2
                : e1763
                Affiliations
                [1] La Habana orgnameInstituto Cubano de Oftalmología Ramón Pando Ferrer Cuba
                Article
                S0864-21762023000200006 S0864-2176(23)03600200006
                54f61736-4527-4151-9183-997447492eaf

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 24 March 2023
                : 08 March 2023
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 21, Pages: 0
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                SciELO Cuba

                Categories
                INVESTIGACIONES

                aberraciones corneales,excimer laser,topographer,refractive surgery,corneal aberrations,láser de excímeros,topógrafo,cirugía refractiva

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