Table 1: Conversion of Snellen eye chart examination score (BCVA score) converted to LogMAR scale using the equation LogMAR VA = LogMAR value of the best line read - 0.02 X (number of letters read).
|
Snellen Visual Acuity to LogMAR Conversion |
|
|
Snellen |
LogMAR |
|
|
|
|
20/20 |
0 |
|
20/25 |
+0.1 |
|
20/32 |
+0.2 |
|
20/40 |
+0.3 |
|
20/50 |
+0.4 |
|
20/63 |
+0.5 |
|
20/80 |
+0.6 |
|
20/100 |
+0.7 |
|
20/125 |
+0.8 |
|
20/160 |
+0.9 |
|
20/200 |
+1.0 |