67,615 items of data are available, covering 62,428 participants, encoded using Data-Coding 100515
Defined-instances run from 0 to 2, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
44,654 participants, 44,654 items
Instance 1 : First repeat assessment visit (2012-13)
8,194 participants, 8,194 items
Instance 2 : Imaging visit (2014+)
14,767 participants, 14,767 items
ACE touchscreen question "Which eye(s) are affected by presbyopia?"
Field 5610 was collected from participants who indicated they wear glasses or contact lenses to correct their presbyopia, as defined by their answers to Field 6147
There are no tabulations involving field 5610.
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