Data
364,467 items of data are available, covering 121,661 participants, encoded using Data-Coding
33.
Defined-instances run from 0 to 1, labelled using Instancing
2.
Array indices run from 0 to 5.
2 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
107,482 participants, 312,678 items
Instance 1 : First repeat assessment visit (2012-13)
17,825 participants, 51,789 items
Notes
This is the asymmetry 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 |
5152 | 3mm asymmetry index for irregular as ... | Current Field is the opposite-side complement to Field 5152 |