FIG. 7.

Effect of blast on visual acuity (A) and contrast sensitivity (B). (A) Optomotor visual testing in mice with 20–40 psi blast revealed normal visual acuity measured at 100% contrast in both eyes compared with sham blasted or normal mice. Visual acuity in both eyes of 50–60 psi blast mice was diminished. (B) Contrast sensitivity was also significantly reduced in 50–60 psi mice compared with 0-psi mice—that is, the 50–60 psi mice needed more contrast to discriminate 0.042 c/d than did sham mice. Asterisks indicate significant differences between 50–60 psi and sham (0-psi) mice. TBI, traumatic brain injury. Color image is available online at www.liebertpub.com/neu