Table 1. Variables in the Electronic Health Record Evaluated to Assess for the Presence of Exfoliation Syndrome.

Variable	Health Record Entry Documenting No.	Health Record Entry Documenting %
Demographic	Age	NA
	Sex	NA
	Race/ethnicity	NA
Clinical encounter	No. of clinical encounters	NA
Billing code documentation	No. of visits with ICD-9 documentation of XFS	% of Visits with ICD-9 documentation of XFS
	No. of visits with ICD-10 documentation of XFS	% of Visits with ICD-10 documentation of XFS
Clinical examination note	No. of visits with XFS mentioned in iris examination	% of Visits with XFS mentioned in iris examination
	No. of visits with XFS mentioned in lens examination	% of Visits with XFS mentioned in lens examination
	No. of visits with iris TIDs mentioned in iris examination	% of Visits with iris TIDs mentioned in iris examination
	Documentation of lens dislocation/subluxation	NA
	Documentation of phacodonesis	NA
Problem list	No. of visits with problem list documentation of XFS	% of Visits with problem list documentation of XFS
Unstructured data	No. of mentions of XFS detected using NLP across all clinical encounters	% of All clinical encounters with ≥1 mention of XFS detected using NLP

Abbreviations: ICD, International Classification of Diseases; NA, not applicable; NLP, natural language processing; XFS, exfoliation syndrome; TID, transillumination defect.