: Data-Field 21011

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Data

88,759 bulk items are available, covering 85,945 participants.
Defined-instances run from 0 to 3, labelled using Instancing 2.
Array indices run from 0 to 1.

The values held within this field are coded links to files held within a bulk repository, not the actual data itself.

4 Instances

Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
67,681 participants, 68,203 items
Data not meaningful for statistical summary

Instance 1 : First repeat assessment visit (2012-13)
19,347 participants, 19,370 items
Data not meaningful for statistical summary

Instance 2 : Imaging visit (2014+)
781 participants, 781 items
Data not meaningful for statistical summary

Instance 3 : First repeat imaging visit (2019+)
405 participants, 405 items
Data not meaningful for statistical summary

Notes

The fda file contains the compressed fundus image and 3D OCT scan data together with the results of the analysis done by the OCT device for the left eye. File size is typically 5 MB.

4 Related Data-Fields

Field ID	Description	Relationship
21013	FDA data file (right)	Current Field is the opposite-side complement to Field 21013
21012	FDS data file (left)	Current Field contains the processed data derived from Field 21012
21015	Fundus retinal eye image (left)	Field 21015 was extracted from the dataset of Current Field
21017	OCT image slices (left)	Field 21017 was extracted from Current Field

6 Resources

Preview	Name	Res ID
	Example FDA file	31
	OCT measurement	100113
	OCT measurement station	100132
	OCT scan in progress	100114
	OCT scan view	100115
	Optical-coherence tomography procedures using ACE	100237

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