ABSTRACT
AIM:
To explore the value of ocular
trauma score(OTS), initial
visual acuity, and ocular structural
parameters in the assessment of healing
visual acuity from ocular
trauma.
METHOD:
A total of 302 cases(302
eyes)of ocular
trauma were selected as subjects, which were accepted and issued clear appraisal
opinions by the
Academy of
Forensic Science from June 2015 to June 2021. The subjects were grouped according to the healing best corrected
visual acuity(BCVA)from ocular
trauma. Group Ⅰ included 63 cases(63
eyes)with BCVA <3.7; Group Ⅱ included 70 cases(70
eyes)with 3.7≤ BCVA <4.5; Group Ⅲ included 78 cases(78
eyes)with 4.5≤ BCVA <4.9; Group Ⅳ included 91 cases(91
eyes)with BCVA≥4.9. In addition, 77 cases(77 healthy
eyes)of ocular
trauma were selected as the
control group, namely Group Ⅴ. The healing BCVA and ocular structural
parameters from ocular
trauma and theirs correlation were analyzed, and the
random forest(RF)and
support vector machine(SVM)model of healing
visual acuity was established by the IBM SPSS Modeler 18.0.
RESULTS:
The initial
visual acuity, OTS, the grading of
corneas,
lenses, and fundus, and the thickness of the
retinal never fiber layer of ocular
trauma patients were correlated with the healing BCVA(P<0.01). There were significant differences in ocular structural
parameters among groups, except the central subfield thickness(P<0.001). The SVM model had higher accuracy of predicting healing
visual acuity than the RF model, and the accuracy rate was over 80% when the error was within 0.15.
CONCLUSION:
OTS and ocular structural examination can provide effective information for the clinical
forensic medicine appraisal of visual dysfunction after ocular
trauma, and they are valuable in discriminating camouflage of visual dysfunction.