Data
27,673 items of data are available, covering 23,973 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
13,603 participants, 13,603 items
Instance 1 : First repeat assessment visit (2012-13)
2,703 participants, 2,703 items
Instance 2 : Imaging visit (2014+)
10,472 participants, 10,472 items
Instance 3 : First repeat imaging visit (2019+)
895 participants, 895 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