What is the correct direction for the flow of eye irrigational fluid?

The appropriate direction for the flow of eye irrigational fluid is from the inner canthus to the outer canthus. This method is designed to help clear any debris or foreign substances from the superficial layers of the eye while minimizing the risk of flushing material further into the eye or eyelid. By starting at the inner canthus, which is closest to the nose, and moving outward towards the outer canthus, the irrigational fluid effectively washes away contaminants, aiding in the protection and health of the eye. This technique is particularly useful in cases of chemical exposure or when particles are present in the eye. The other options do not follow this effective method and might lead to the inadvertent spread of contaminants or insufficient cleansing.