WARNING: the interactive features of this website use CSS3, which your browser does not support. To use the full features of this website, please update your browser.
2,403 items of data are available, covering 2,403 participants, encoded using Data-Coding 54. Defined-instances run from 0 to 0, labelled using Instancing 2.
Against participant wishes871
Lack of time26
Unwilling to remove contact lenses345
Reason not known65
Other health reason64
Unable to understand instructions6
Other eye-related reason834
Counts of participants/items last updated 09 Feb 2020.
Reason intraocular pressure measurement (right eye) was not performed (entered as free-text by a UK Biobank Staff member).
This field was created by post-hoc coding the free-text reasons entered during the assessment centre visit. The encoding used was constructed after the data had been examined to determine suitable representative groupings.