Data
25,428 items of data are available, covering 22,233 participants, encoded using Data-Coding
100515.
Defined-instances run from 0 to 3, labelled using Instancing
2.
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
13,605 participants, 13,605 items
Instance 1 : First repeat assessment visit (2012-13)
2,703 participants, 2,703 items
Instance 2 : Imaging visit (2014+)
8,428 participants, 8,428 items
Instance 3 : First repeat imaging visit (2019+)
692 participants, 692 items
Notes
ACE touchscreen question "Which eye(s) are affected by astigmatism?"
Field 5855 was collected from participants who indicated they wear glasses or contact lenses to correct their astigmatism, as defined by their answers to Field 6147