% of Pupil Change
| Status | No Existing Standard |
| Category | Pupils |
| Common Name | % Pupil Change |
| Label | %CH |
| Description | % of change ((SIZE-MIN) / SIZE) % |
| Background | Parameter of pupil measurement. |
| Devices | NPI-200 Pupillometer |
| Units | % |
| Metadata | Eye (Right/Left) |