Axial length
|
Largest basal diameter (by length of single chord measurement)
|
---|
6 mm
|
8 mm
|
10 mm
|
12 mm
|
14 mm
|
16 mm
|
18 mm
|
---|
21.9 mm (− 2 SD)
|
6.08
|
8.19
|
10.38
|
12.70
|
15.19
|
17.94
|
21.13
|
22.8 mm (− 1 SD)
|
6.07
|
8.17
|
10.35
|
12.64
|
15.07
|
17.74
|
20.75
|
23.7 mm (average)
|
6.07
|
8.16
|
10.32
|
12.58
|
14.98
|
17.56
|
20.44
|
24.6 mm (+ 1 SD)
|
6.06
|
8.15
|
10.30
|
12.54
|
14.89
|
17.42
|
20.19
|
25.5 mm (+ 2 SD)
|
6.06
|
8.14
|
10.28
|
12.49
|
14.82
|
17.30
|
19.98
|
Maximum difference (− 2 SD to + 2 SD)
|
0.02
|
0.05
|
0.10
|
0.21
|
0.37
|
0.64
|
1.15
|
Plaque selection
|
All same
|
All same
|
All same
|
All same
|
All same
|
All same
|
All same (enucleation)
|
- The implication is that the actual axial length need not be measured, and the population average axial length (23.7 mm) can be substituted
- mm, millimeters; SD, standard deviation