[Correlativity between projected visual chart vision and contrast vision].
OBJECTIVE
To study the correlativity between the projected visual chart vision ("projector vision" in this paper) and the measured values of contrast vision, and to explore the application of contrast vision in identifying visual impairment after eye injury in the clinical forensic medicine.


METHODS
One hundred and twenty nine eyes of seventy-nine young volunteers were collected for examination both of projector vision and contrast vision. In the examination of contrast vision, the contrast of optotypes were set to 100%, 25% and 10%, respectively. The correlativity of both collected experimental data were statistically analyzed.


RESULTS
Projector vision was consistent with 100% contrast vision. There was a close and positive correlation between the contrast of optotypes and measured vision values. Under the same contrast of optotypes, projector vision presented a linear correlation with the average value of contrast vision.


CONCLUSIONS
There is a close correlation between projector vision and contrast vision. The contrast vision can be applied to judicial identification in the clinical forensic medicine.
Department of Forensic Medicine, Medical College of Soochow University, Suzhou 215123, China. l_dm1987@163.com
Dong-Mei
DM
Liu
Shu
S
Zhou
Wen-Tao
WT
Xia
Jie-Min
JM
Chen
Shu-Ya
SY
Peng
D000328:Adult; D015350:Contrast Sensitivity; D005131:Eye Injuries / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014787:Vision Tests; D014792:Visual Acuity; D055815:Young Adult