RT info:eu-repo/semantics/article T1 The repeatability and agreement of ocular parameters measured with the MYAH and Myopia Master devices between expert and non-expert practitioners A1 Ortiz Toquero, Sara A1 Sánchez Pavón, Irene A1 Gurrea, Carmen A1 Recio Carnero, Alba A1 Balsa, David A1 Martín Herranz, Raúl K1 Axial length K1 Myopia K1 Myopia control K1 Miopía K1 Precision medicine K1 Vision disorders K1 Vision, trastornos de la K1 Eye - Diseases K1 Ojos - Enfermedades K1 Medicine K1 Ophthalmology K1 Optometry K1 Public health K1 3201.09 Oftalmología K1 2209.15 Optometría K1 32 Ciencias Médicas K1 3212 Salud Publica AB In myopia control, it is essential to measure the axial length (AL) and corneal parameters, and to monitor whether changes in these parameters have occurred over time. The aim of this study was to analyse the repeatability and agreement between expert and non-expert practitioners in ocular parameters measured by the MYAH and Myopia Master. Three repeated measurements (n = 42) were recorded with the MYAH and Myopia Master by two (an expert and a non-expert) observers in a randomized order. The AL, K1, K2, and white-to-white (WTW) distance were collected. The intraobserver repeatability was excellent in all parameters measured with both devices in both observers. The AL outcome presented the best repeatability with the MYAH and Myopia Master (intraclass correlation coefficient, ICC = 1.0; coefficient of variation, CV ≤ 0.06% for both observers), while the WTW presented poorer results (ICC ≤ 0.991; CV ≤ 0.52%). The Myopia Master provides a significantly (p ≤ 0.01) flatter K1 and K2 as well as a lower WTW (p ≤ 0.01) than the MYAH. No statistically significant difference in AL measurements was found with either device (p ≥ 0.10; ICC = 1.0). None of the parameters showed differences (p ≥ 0.12) between the expert and non-expert observer. The MYAH and Myopia Master provide consistent measurements in a healthy adult population regardless of the previous clinical experience of the observer. AL measurements should be used interchangeably but K1, K2, and WTW should be used interchangeably with caution. PB MDPI SN 2075-1729 YR 2024 FD 2024 LK https://uvadoc.uva.es/handle/10324/70136 UL https://uvadoc.uva.es/handle/10324/70136 LA eng NO Life, 2024, Vol. 14, Nº. 3, 407 NO Producción Científica DS UVaDOC RD 26-dic-2024