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Variation of Coma Aberration With Prismatic Soft Contact Lenses



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Carpena Torres, Carlos y López Alonso, José Manuel y Burgos Martínez, Mercedes y Carracedo Rodríguez, Juan Gonzalo y Carballo Álvarez, Jesús (2018) Variation of Coma Aberration With Prismatic Soft Contact Lenses. Eye & Contact Lens, 44 (Supl 2). S202-S209. ISSN 1542-233X

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URL Oficial: http://dx.doi.org/10.1097/ICL.0000000000000485


PURPOSE: To analyze the variation in vertical coma and the rest of ocular aberrations before and after fitting prismatic soft contact lenses (PSCL). METHODS: Thirty-seven eyes of 20 healthy subjects (24.30±2.03 years) were evaluated to analyze the variation in ocular wavefront aberrations before and after fitting PSCL of different base-down prism values (1.0, 1.5, and 2.0 prism diopters [PD]), designed to study its influence in the compensation of vertical coma aberration. A Hartmann-Shack sensor with a wavelength of 780 nm was used, considering a pupil size of 3 mm. In addition, the influence of PSCL in visual function under photopic conditions in terms of high-contrast visual acuity and contrast sensitivity was evaluated. RESULTS: There was statistically significant differences (P<0.05) in ocular aberrations from first to seventh order after fitting PSCL, but only the differences in vertical tilt, horizontal tilt, defocus, vertical astigmatism, and vertical coma were clinically relevant (Strehl ratio <0.8). The mean of vertical coma (μm) was 0.022±0.030 for control, 0.045±0.064 for 1.0 PD (P=0.645), 0.048±0.053 for 1.5 PD (P=0.037), and 0.074±0.047 for 2.0 PD (P<0.001). The changes in visual function under photopic conditions were not clinically relevant. CONCLUSIONS: PSCL induce a magnitude of vertical coma aberration directly proportional to prism value without affecting the rest of ocular high-order aberrations.

Tipo de documento:Artículo
Palabras clave:Coma aberration; Tilt; Prism; Soft contact lenses
Materias:Ciencias Biomédicas > Óptica y optometría > Lentes de contacto
Ciencias Biomédicas > Óptica y optometría > Optometría
Código ID:51190
Depositado:14 Feb 2019 13:48
Última Modificación:14 Feb 2019 13:48

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