Fig. 61. Diagram showing intraocular pressure effects and regions vulnerable to tear when the globe is exposed to blunt trauma. A. Arrow at left shows the direction of the blunt force being applied to the eye. The result is extensive deformation of the globe. B. Horizontal arrows within the eye show propagation of the force vector in the same direction toward the macular region (countercoup). C. Other arrows represent force vectors set in motion in planes perpendicular to the direction of the main force.