Answer:
Asthenopia is more commonly known as eyestrain or ocular fatigue. It's a common condition that occurs when your eyes become tired from intense use. Staring at a computer screen for long periods or straining to see in dim light are common causes.
Explanation:
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A bed bug is a bug that lives in your bed. When you sleep in it those bugs would crawl all over you and bite you. They will leave nasty bite marks all over your skin when you wake up.
Impaired pedestrians are often seen on roads at night.