Location

Average Elevation ± SD (µm)

Elevation Range (µm)

Elevation +1SD (µm)

Elevation +2SD (µm)

Elevation +3SD (µm)

Anterior Apex

0.4 ± 1.9

-3 to +13

2.3

4.2

6.1

Anterior Thinnest

-0.1 ± 2. 2

-6 to +4

2.1

4.3

6.5

Posterior Apex

5.7 ± 3.6

-1 to +14

9.3

12.9

16.6

Posterior Thinnest

10.6 ± 5.7

-2 to +30

16.3

22.1

27.8

Table 1: Average, range and standard deviation of normal hyperopic corneal elevation values.