The repeatability and agreement of ocular parameters measured with the MYAH and Myopia Master devices between expert and non-expert practitioners

AI Generated Summary*

The MYAH and Myopia Master biometers were assessed for repeatability, interdevice agreement and operator experience effects. An optometrist with over ten years' experience and a final-year optometry student, both new to these instruments, each measured axial length (AL), keratometry (K1, K2) and white-to-white (WTW) distance three times per device in 42 healthy adults' right eyes (mean age 24.7 years). All intraobserver ICCs exceeded 0.98; AL was most repeatable (ICC 1.0, CV at most 0.06%), WTW least (CV up to 0.52%). AL did not differ between devices (p at least 0.10), but the Myopia Master gave flatter K1 and K2 and smaller WTW (p 0.01 or below). Expert and novice results did not differ significantly.

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