: Data-Field 5149

Data-Field 5149

Description:	3mm regularity index for irregular astigmatism level (left)
Category:	Assessment centre ⏵ Eye measures ⏵ Refractometry ⏵ Refractometer 1
	Physical measures

Participants

121,579

Categorical (single)

Both sexes

Jan 2012

364,277

Data

Defined (2)

Aug 2025

Complete

Primary

Yes (6)

o1 s1

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.

Data

364,277 items of data are available, covering 121,579 participants, encoded using Data-Coding 33.
Defined-instances run from 0 to 1, labelled using Instancing 2.
Array indices run from 0 to 5.

Graph illustrating main data

2 Instances

Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
107,411 participants, 312,522 items
Graph illustrating main data

Instance 1 : First repeat assessment visit (2012-13)
17,809 participants, 51,755 items
Graph illustrating main data

Notes

This is the regularity index of the level of irregular astigmatism (1=A, 2=B, 3=C) as part of the keratometry result taken at 3mm for the left eye

1 Related Data-Field

Field ID	Description	Relationship
5164	3mm regularity index for irregular a ...	Current Field is the opposite-side complement to Field 5164

3 Resources

Preview	Name	Res ID
$Preview of Auto-refraction measurement$	Auto-refraction measurement	100110
$Preview of Auto-refraction measurement close-up$	Auto-refraction measurement close-up	100111
$Link to Auto-refraction measurement using ACE$	Auto-refraction measurement using ACE	100242

Enabling scientific discoveries that improve human health