Analysis of Ocular Injury Characteristics in Survivors of the 8.12 Tianjin Port Explosion, China

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 sum		OTS score
0–44		1
45–65		2
66–80		3
81–91		4
92–100		5

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