Data
137,731 items of data are available, covering 133,478 participants.
Defined-instances run from 0 to 1, labelled using Instancing 
2.
Units of measurement are seconds.
| 
| Maximum | 1883 |  | Decile 9 | 138 |  | Decile 8 | 112 |  | Decile 7 | 98 |  | Decile 6 | 88 |  | Median | 80 |  | Decile 4 | 73 |  | Decile 3 | 66 |  | Decile 2 | 59 |  | Decile 1 | 50 |  | Minimum | 5 |  |   | 
There are 488 distinct values.Mean = 89.4224Std.dev = 43.22851898 items above graph maximum of 226 | 
2 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
117,461 participants, 117,461 items
| 
| Maximum | 1883 |  | Decile 9 | 139 |  | Decile 8 | 113 |  | Decile 7 | 99 |  | Decile 6 | 89 |  | Median | 81 |  | Decile 4 | 73 |  | Decile 3 | 66 |  | Decile 2 | 59 |  | Decile 1 | 51 |  | Minimum | 5 |  |   | 
There are 474 distinct values.Mean = 90.0586Std.dev = 43.04111557 items above graph maximum of 227 | 
Instance 1 : First repeat assessment visit (2012-13)
20,270 participants, 20,270 items
| 
| Maximum | 1138 |  | Decile 9 | 133 |  | Decile 8 | 107 |  | Decile 7 | 94 |  | Decile 6 | 84 |  | Median | 75 |  | Decile 4 | 69 |  | Decile 3 | 62 |  | Decile 2 | 55 |  | Decile 1 | 48 |  | Minimum | 6 |  |   | 
There are 358 distinct values.Mean = 85.7354Std.dev = 44.118365 items above graph maximum of 218 | 
Notes
Duration at which visual-acuity (left eye) first shown,
1 Related Data-Field
| Field ID | Description | Relationship | 
|---|
| 5186 | Duration visual-acuity screen displa ... | Current Field is the opposite-side complement to  Field 5186 |