[Application of the Virtual Reality-Pattern Visual Evoked Potential in Forensic Visual Acuity Evaluation].
Fa Yi Xue Za Zhi
; 36(6): 762-766, 2020 Dec.
Article
en Zh
| MEDLINE
| ID: mdl-33550723
ABSTRACT
ABSTRACT Objective To explore a kind of visual evoked potential test equipment and method that is more suitable for the application of forensic clinical visual acuity evaluation. Methods Thirty-four volunteers ï¼68 eyesï¼ were selected, including 15 males and 19 females, aged between 20 and 40 years. Test lenses were placed before the tested eyes of volunteers to induce refractive myopia with insert method, and the diopter lenses were adjusted so that the visual acuity level of one eye of volunteers was above 0.8, and the visual acuity of the other eye was at moderate damage level ï¼<0.3 and ≥0.1ï¼. The tests were carried out under the binocular simultaneous asynchronous stimulation mode ï¼hereinafter referred to as "binocular mode"ï¼ and monocular separate stimulation mode ï¼hereinafter referred to as "monocular mode"ï¼ of virtual reality-pattern visual evoked potential ï¼VR-PVEPï¼, and the amplitude of PVEP of volunteers under the two modes was compared at four spatial frequencies of 8×8, 16×16, 24×24 and 32×32. Results The differences in the amplitude of P100 wave between monocular and binocular modes at 8×8 spatial frequency had no statistical significance and the differences in amplitude of P100 wave between monocular and binocular modes at 16×16, 24×24, and 32×32 spatial frequencies had statistical significance ï¼P<0.05ï¼. The amplitude of the same eye in monocular mode was higher than that in binocular mode. Through correlation analysis, it was found that the amplitude of P100 wave in monocular mode was moderately correlated with amplitude of P100 wave in binocular mode. Conclusion In forensic identification practice, VR-PVEP is helpful for overcoming the disturbance of poor fixation, and to increase the reliability of PVEP evaluation results. It can greatly shorten the detection time of PVEP and improve work efficiency.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Potenciales Evocados Visuales
/
Realidad Virtual
Tipo de estudio:
Prognostic_studies
Límite:
Adult
/
Female
/
Humans
/
Male
Idioma:
Zh
Revista:
Fa Yi Xue Za Zhi
Asunto de la revista:
JURISPRUDENCIA
Año:
2020
Tipo del documento:
Article
País de afiliación:
China