Table 1: Method for deriving the OTS.

Variables
A: initial raw score (based on initial visual acuity)Raw points
NLP = 60
LP/HM = 70
1/200–19/200 = 80
20/200–20/50 = 90
≥20/40 = 100
B: rupture−23
C: endophthalmitis−17
D: perforating injury−14
E: retinal detachment−11
F: RAPD−10
Conversion of raw points into OTS category
Raw score sumOTS score
0–441
45–652
66–803
81–914
92–1005

OTS: ocular trauma score; NLP: no light perception; LP: light perception; HM: hand motion; RAPD: relative afferent pupillary defect.