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.
3,164 items of data are available, covering 3,164 participants, encoded using Data-Coding 54.
Against participant wishes457
Lack of time1709
Unwilling to remove contact lenses214
Reason not known187
Other health reason39
Unable to understand instructions7
Other eye-related reason267
Counts of participants/items last updated 13 Apr 2019.
Reason optical coherence tomography 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.