Precision and agreement of axial length in paediatric population measured with MYAH and AL-Scan biometers

AI Generated Summary*

Axial length precision and agreement were compared for two myopia management biometers, MYAH and AL-Scan, in Spanish schoolchildren aged 7 to 10. Of 187 participants (mean age 8.5 years, mean spherical equivalent +0.22 D), subsets of 74 to 144 joined each test, on undilated right eyes. Both devices showed a Sw of 0.01 mm, with 95% of repeats expected inside 0.04 mm, under single-operator and two-operator testing alike, although AL-Scan values shifted between operators (p = 0.002). Mean between-device difference was 0.00 mm, limits of agreement -0.04 to 0.05 mm (p = 0.021). Every figure sat below the 0.10 mm threshold the authors treat as clinically meaningful, supporting their view that the instruments are interchangeable for myopia monitoring.

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