The
United States Eye Injury Registry (USEIR) developed the Ocular
Trauma Score (OTS) with support from the Centers for Disease
Control and Prevention (CDC)*. The OTS provides a single
probability estimate of an eye trauma patient will obtain
a specific visual range by six months after injury. The OTS
can be used as an aid in the counseling and treatment of
eye injury patients, and is able to direct attention toward
resource needs and rehabilitation during the treatment process.
The OTS is meant to be a continually evolving scoring system
to be used by the clinician to facilitate patient counseling,
treatment, rehabilitation, and research.
How
to calculate the Ocular Trauma Score
First,
determine the patient’s initial visual acuity after
the injury and their tissue diagnoses. Second, assign a raw
point value for initial visual acuity from row A from Table
1. Then subtract the appropriate raw points for each diagnosis
from rows B-F. (For example, a patient with an initial visual
acuity of 1/200, scleral rupture, and retinal detachment
would receive a raw OTS score of 80-23-11= 46.) Higher OTS
scores tend to indicate a better prognosis. To provide an
estimate of the patient’s probability of attaining
a specific visual acuity range at a six-month follow-up,
locate the row in Table 2 corresponding to the patient’s
OTS. (A patient with a raw OTS score of 46 would have an
OTS category score of 2.) Table 2 shows the estimated probability
of all potential visual outcomes vision after six-months.
Note.
Spearman Correlation of OTS score (1-5) the with actual follow-up
visual acuity category (1-5) for 67% development sample of
the original 1275 (n=1,461) cases of the combined data =.
71,p<. 001. Spearman Correlation of OTS score (1-5) with
the actual follow-up visual acuity category (1-5) for 33%
testing sample of original 1275 (n=690) cases of the combined
data =. 68 (greater than original) p<.001.
*Developed by the United States Eye Injury Registry (USEIR) with support from
the Centers for Disease Control & Prevention (CDC) Grant R49/CCR411716-01
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