2026-10-02T16:00:06Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/130892023-08-27T09:15:36Zcom_20.500.14352_14col_20.500.14352_15

Variation of Coma Aberration With Prismatic Soft Contact Lenses Carpena Torres, Carlos López Alonso, José Manuel Burgos Martínez, Mercedes Carracedo Rodríguez, Juan Gonzalo Carballo Álvarez, Jesús 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. 2023-06-17T13:19:40Z 2023-06-17T13:19:40Z 2018-11 journal article 1542-233X 10.1097/ICL.0000000000000485 https://hdl.handle.net/20.500.14352/13089 http://dx.doi.org/10.1097/ICL.0000000000000485 https://insights.ovid.com/pubmed?pmid=29420325 eng restricted access Wolters Kluwer