Final answer:
True, eye irrigation should be done from the outer to inner canthus to prevent contaminating the lacrimal punctum and deeper parts of the eye.
Step-by-step explanation:
The statement that the eye should be irrigated so that the solution flows from the outer to inner canthus is true. This is the proper way to perform eye irrigation to ensure that any foreign material is flushed away from the lacrimal punctum, which is part of the drainage system for tears and could lead to deeper parts of the eye or the nasal cavity if contaminants are flushed toward it. Consequently, when administering a saline solution or any other irrigating fluid, care should always be taken to begin at the outer edge of the eye (near the ear) and allow the fluid to flow across the eye to the inner canthus (near the nose).