Category 1306
Assessment centre ⏵ Eye measures ⏵ Refractometry

Description

Refractometry was carried out in two phases: an initial set of measurements was made on part of the cohort during the recruitment phase and during the repeat visit in 2012 (Category 100014). A second set of measurements were made during the re-imaging visit towards the end of 2022 (Category 1419). Different devices were used to acquire measures in these different periods and data is therefore presented separately.