Visual Acuity Testing (Snellen Chart) was developed by Dr. Snellen, an ophthalmologist, in 1908. It gives a general indication of visual acuity, and is not deemed to be a diagnostic test.
Exam requirements:
1. Check the room illumination, and make sure the screen brightness is 100%.
2. Fix the mobile phone 4 feet (1.2 m) away.
3. Check your right eye, with your left eye covered, and then the other way around.
4. Read the letters from top to bottom.
| Row | Result | Recommendation |
| 1 | 6/60 | You need to see a doctor for a more accurate diagnosis. |
| 2 | 6/30 | You need to see a doctor for a more accurate diagnosis. |
| 3 | 6/21 | You need to see a doctor for a more accurate diagnosis. |
| 4 | 6/15 | You need to see a doctor for a more accurate diagnosis. |
| 5 | 6/12 | You need to see a doctor for a more accurate diagnosis. |
| 6 | 6/9 | You need to see a doctor for a more accurate diagnosis. |
| 7 | 6/7.5 | You need to see a doctor for a more accurate diagnosis. |
| 8 | 6/6 | Keep caring for your eye health. |
| 9 | 6/6 | Keep caring for your eyes. |
| 10 | 6/6 | Keep caring for your eye health. |
| 11 | 6/6 | Keep caring for your eye health.
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