Carpena Torres, CarlosLópez Alonso, José ManuelBurgos Martínez, MercedesCarracedo Rodríguez, Juan GonzaloCarballo Álvarez, Jesús2023-06-172023-06-172018-111542-233X10.1097/ICL.0000000000000485https://hdl.handle.net/20.500.14352/13089PURPOSE: 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.engjournal articlehttp://dx.doi.org/10.1097/ICL.0000000000000485https://insights.ovid.com/pubmed?pmid=29420325restricted access617.7-089.243681.73612.84Coma aberrationTiltPrismSoft contact lensesLentes de contactoOptometría3311.11 Instrumentos ópticos2209.15 Optometría