Answer:
<u><em>The answer is</em></u>: <u>When a foreign substance, usually irritating, penetrates the eyes, and for people with sensitive eyes.</u>
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Explanation:
An eyewash liquid, or eyewash liquid system is a liquid, <em>usually a saline solution,</em> used as an emergency or safety mechanism <u><em>in laboratories and industrial plants</em></u><em> as an aid to eye rinsing, s</em> when a foreign substance, usually irritating, penetrates in them.
<em>These eye drops can be beneficial </em>for people with sensitive eyes <em>and can provide relief from the side effects of painful sensation.
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<u><em>The answer is</em></u>: <u>When a foreign substance, usually irritating, penetrates the eyes, and for people with sensitive eyes.</u>