López Artero, EstherGarzón Jiménez, NuriaRodríguez Vallejo, ManuelGarcía Montero, María2023-06-162023-06-1620201888-429610.1016/j.optom.2020.06.004https://hdl.handle.net/20.500.14352/6427Recibido: 11 enero 2020; Aceptado: 29 junio 2020Purpose: To assess differences in a new objective metric obtained with a double-pass technique between a group with accommodation insufficiency (AI) and a control group and to explore the diagnostic capabilities of this new tool in comparison to conventional procedures. Methods: Retrospective cross-sectional case-control phase 1 study. Two groups age ranging from 8 to 18 years were recruitment: AI and control group. The diagnostic criterion of AI was based on monocular accommodative amplitude (AA) 2 D below Hofstetter’s calculation for minimum AA and monocular accommodative facility (MAF) failing with minus lens and cut-off at ≤ 6 cycles per minute. Accommodative response with a double pass device (HD Analyzer, Visiometrics) was measured, performing an evaluation from +1.00 D to −3.50D (−0.5D steps), offering the width of the profile at 50% (WP) in minutes of arc. Results: Differences were found between groups for the AA, MAF and MEM retinoscopy (p < 0.0001, p < 0.001, p = 0.037). The discriminative capacity of MEM retinoscopy for AI diagnosis was significant and the cut-off that maximized the sensitivity and specificity was > 0.5 D. Considering WP 50% in different points, the discriminative AI diagnosis capacities for the points of 2.0 D and 2.50 D were significant (ROC-AUC 0.78; p = 0.03 and p = 0.02). Conclusions: Double-pass system metric differed between patients with AI and control group, therefore the aim of a Phase I study was achieved. Further steps with higher sample sizes are required to evidence if the system really provides any advantage versus conventional methods in the diagnosis of AI.engAtribución-NoComercial-SinDerivadas 3.0 Españajournal articlehttps://doi.org/10.1016/j.optom.2020.06.004http://www.journalofoptometry.org/open access617.726681.784.47Accommodation insufficiencyAmplitude accommodationDoble-PassOptometríaÓptica geométrica e instrumental2209.15 Optometría2209.06 Óptica geométrica