The OTS—calculation and probability of visual outcome
| Calculation of the OTS | |
|---|---|
| Initial visual factor | Raw points |
| A. Initial visual acuity category | NLP=60 |
| LP to HM=70 | |
| 1/200 to 19/200=80 | |
| 20/200 to 20/50=90 | |
| ≥20/40=100 | |
| B. Globe rupture | −23 |
| C. Endophthalmitis | −17 |
| D. Perforating Injury | −14 |
| E. Retinal detachment | −11 |
| F. Afferent pupillary defect | −10 |
| Probability of visual outcome | ||||||
|---|---|---|---|---|---|---|
| Raw score sum | OTS–Score category | NLP (%) | LP/HM (%) | 1/200-19/200 (%) | 20/200-20/50 (%) | ≥20/40 (%) |
| 0–44 | 1 | 73 | 17 | 7 | 2 | 1 |
| 45–65 | 2 | 28 | 26 | 18 | 13 | 15 |
| 66–80 | 3 | 2 | 11 | 15 | 28 | 44 |
| 81–91 | 4 | 1 | 2 | 2 | 21 | 74 |
| 92–100 | 5 | 0 | 1 | 2 | 5 | 92 |
HM, hand movements; LP, light perception; NLP, no light perception; OTS, Ocular Trauma Score.