Visual acuity notations side by side
In the last row, type a value into any box and press Enter to see it in every other notation.
- Normal vision (logMAR 0.1 and better)
- Mild vision loss (0.2 to 0.5)
- Moderate vision loss (0.6 to 0.9)
- Severe vision loss (1.0)
| LogMAR | MAR | VAS | Snellen1 m | Snellen4 m | Snellen5 m | Snellen6 m | Snellen20 ft | Decimal |
|---|---|---|---|---|---|---|---|---|
| -0.3 | 0.5 | 115 | 1/0.5 | 4/2 | 5/2.5 | 6/3 | 20/10 | 2.0 |
| -0.2 | 0.63 | 110 | 1/0.63 | 4/2.5 | 5/3.2 | 6/3.8 | 20/12.5 | 1.6 |
| -0.1 | 0.79 | 105 | 1/0.8 | 4/3.2 | 5/4 | 6/4.8 | 20/16 | 1.25 |
| 0.0 | 1.0 | 100 | 1/1 | 4/4 | 5/5 | 6/6 | 20/20 | 1.0 |
| 0.1 | 1.25 | 95 | 1/1.25 | 4/5 | 5/6.3 | 6/7.6 | 20/25 | 0.8 |
| 0.2 | 1.58 | 90 | 1/1.6 | 4/6.3 | 5/8 | 6/9.5 | 20/32 | 0.63 |
| 0.3 | 1.99 | 85 | 1/2 | 4/8 | 5/10 | 6/12 | 20/40 | 0.5 |
| 0.4 | 2.51 | 80 | 1/2.5 | 4/10 | 5/12.5 | 6/15 | 20/50 | 0.4 |
| 0.5 | 3.16 | 75 | 1/3.2 | 4/13 | 5/16 | 6/19 | 20/63 | 0.32 |
| 0.6 | 3.98 | 70 | 1/4 | 4/16 | 5/20 | 6/24 | 20/80 | 0.25 |
| 0.7 | 5.01 | 65 | 1/5 | 4/20 | 5/25 | 6/30 | 20/100 | 0.2 |
| 0.8 | 6.3 | 60 | 1/6.3 | 4/25 | 5/32 | 6/38 | 20/125 | 0.16 |
| 0.9 | 7.94 | 55 | 1/8 | 4/32 | 5/40 | 6/48 | 20/160 | 0.125 |
| 1.0 | 10.0 | 50 | 1/10 | 4/40 | 5/50 | 6/60 | 20/200 | 0.1 |