Final answer:
Bloodshot eyes or conjunctival hemorrhages noticed after flight may be secondary to inertial force.
Step-by-step explanation:
Bloodshot eyes or conjunctival hemorrhages noticed after flight may be secondary to inertial force. When a plane accelerates or decelerates, the change in velocity can cause an inertial force on the body, including the eyes. This force can lead to blood vessels in the eyes breaking, resulting in bloodshot eyes or conjunctival hemorrhages.