Data
33,848 items of data are available, covering 28,045 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
13,592 participants, 13,592 items
Instance 1 : First repeat assessment visit (2012-13)
2,702 participants, 2,702 items
Instance 2 : Imaging visit (2014+)
14,748 participants, 14,748 items
Instance 3 : First repeat imaging visit (2019+)
2,806 participants, 2,806 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