Task Assessment Results: Simulated-Use Usability Study
| Product Use Tasks | Successfully Completed Tasks | |||
|---|---|---|---|---|
| Retina Specialists (n = 15) | Assistants (n = 15) | |||
| 1st Use | 2nd Use | 1st Use | 2nd Use | |
| Unpack carton (E) | 12/12a | 12/12a | 15/15 | 15/15 |
| Unpack PFS (E) | 12/12a | 12/12a | 15/15 | 15/15 |
| Snap off syringe cap (E) | 15/15 | 15/15 | 15/15 | 15/15 |
| Attach injection needle (E) | 15/15 | 15/15 | 15/15 | 15/15 |
| Remove injection needle cap (E) | 15/15 | 15/15 | NA | NA |
| Dislodge air bubble inside PFS | 15/15 | 15/15 | NA | NA |
| Expel air from inside PFS | 15/15 | 15/15 | NA | NA |
| Adjust drug dose (E, SC) | 15/15 | 15/15 | NA | NA |
| Administer intravitreal injection (E) | 15/15 | 15/15 | NA | NA |
| Remove PFS from injection site (E) | 15/15 | 15/15 | NA | NA |
| Dispose of PFS (SC) | 15/15 | 15/15 | 15/15 | 15/15 |
↵a Task not assessed for some participants; users were only assessed on tasks they routinely perform.
E = essential; NA = not applicable; PFS = prefilled syringe; SC = safety-critical.