Table 1: Summary of results for groups tested using the Snellen Chart (Snellen VA) and the iPad mini 2 app (iPad VA) including the mean, number of participants, standard deviation and the standard error mean.
|
Mean |
N |
Std. Deviation |
Std. Error Mean |
|
Pair 1 |
Snellen VA OD |
0.247525 |
100 |
0.2534718 |
0.0263472 |
iPad VA OD |
0.204815 |
100 |
0.2609070 |
0.0270907 |
|
Pair 2 |
Snellen VA OS |
0.227780 |
100 |
0.2568615 |
0.0276861 |
iPad VA OS |
0.197417 |
100 |
0.2670464 |
0.0287046 |
|
Pair 3 |
PH VA Snellen OD |
0.104946 |
25 |
0.1221205 |
0.0244241 |
PH VA iPad OD |
0.092000 |
25 |
0.1312404 |
0.0262481 |
|
Pair 4 |
PH VA Snellen OS |
0.101568 |
27 |
0.1355562 |
0.0260878 |
PH VA iPad OS |
0.105485 |
27 |
0.1435641 |
0.0274779 |