LAUSR

Aims/Purpose: To compare and evaluate the agreement of the refractive parameters provided by a new open field aberrometer (OFA‐Osiris CSO®) and those obtained by the subjective refraction.Methods: It is an observational, prospective, and transversal study composed by subjects younger than 40 years‐old without ocular pathologies neither accommodation disfunction. All subjects underwent an exhaustive optometric evaluation including the subjective refraction and an ocular aberrometry with OFA‐Osiris device. The sphere, cylinder and axis were obtained from both methods being converted to polar notation using M, J0 and J45 vectors for an accurate refractive management. The refractive data provided by ocular aberrometry were extracted at 4 and 5mm of pupil diameter. The Wilcoxon sum tank test was applied for the comparison between methods and the Bland‐Altman plots were used for the agreement analysis.Results: A total of 183 subjects of a mean age of 24.85 ± 5.19 years‐old were included. Selecting a pupil diameter of 5 mm with ocular aberrometry, the refractive measurements did not present statistical differences with the subjective method obtaining a mean M of ‐1.58 ± 2.26D and ‐1.59 ± 2.31D respectively (p: 0.228), a mean J0 of 0.03 ± 0.27D and 0.01 ± 0.26 Drespectively (p: 0.280), and a mean J45 of 0.01 ± 0.24D and 0.01 ± 0.26D respectively (p: 0.259). However, considering an aberrometric pupil diameter of 4 mm, the M vector was significantly different to the obtained by subjective refraction (‐1.49 ± 2.33D and ‐1.59 ± 2.31d respectively, p < 0.001) not presenting difference in terms of astigmatism. Bland‐Altman plots revealed limits of agreements higher than 1 diopter to refractive parameters.Conclusions: The aberrometric refraction provided by a new open field aberrometer presented good agreement with the subjective refraction, especially considering a pupil diameter of 5mm. However, it may present clinical differences between both techniques, therefore the subjective refraction must be considered as the gold standard for the refractive evaluation.