Table 1.
PPI scoring algorithm
| Maximun intensity reached by the stimulation (mA) | PPI Score | Pupil reactivity level of the patient |
|---|---|---|
| 10 | 9 | The pupil’s dilatation is over 13% during the stimulation 10 mA |
| 20 | 8 | The pupil’s dilatation is over 13% during the stimulation 20 mA |
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| 30 | 7 | The pupil’s dilatation is over 13% during the stimulation 30 mA |
| 40 | 6 | The pupil’s dilatation is over 13% during the stimulation 40 mA |
| 50 | 5 | The pupil’s dilatation is over 13% during the stimulation 50 mA |
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| ||
| 60 | 4 | The pupil’s dilatation is over 13% during the stimulation 60 mA |
| 60 | 3 | The pupil’s dilatation is over 13% during the second level of 60 mA |
| 60 mA (5% < pupil dilatation < 13%) | 2 | The pupil’s dilatation is over 13% during the third level of 60 mA stimulation |
| 60 mA (pupil dilatation ≤ 5%) | 1 | The pupil’s dilatation is over 13% during the last stimulation of 60 mA |