Data
30,895 items of data are available, covering 26,187 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
13,597 participants, 13,597 items
Instance 1 : First repeat assessment visit (2012-13)
2,702 participants, 2,702 items
Instance 2 : Imaging visit (2014+)
12,890 participants, 12,890 items
Instance 3 : First repeat imaging visit (2019+)
1,706 participants, 1,706 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