Specific activities of tear sample MMPs assayed against Mca-septapeptide
| Ocular condition | Sample reference | Specific activity (fluorescence units/min/mg) |
| Group 1 (n=4) | Not given | 0 |
| Group 2a | 1, 2, 4, 7 | 0 |
| Group 2b | 11, 14 | 0 |
| 8, 12, 13 | 18 (3) | |
| Group 3 | 20, 21, 22 | 0 |
| Group 4 | 18 | 24 |
| Group 5 | 30 | 13 |
| Commercial preparation | 370.0 |