A pair of glasses
This story was in some kind of ophthalmological clinic. More precisely, in the optical shop of this clinic. Many showcases are located along two walls. Also, three or four glass showcases were in the center of the room. All the showcases have hundreds of pairs of glasses. They were both designer frames from famous brands, and nameless things.

Every evening the room becomes empty when all the people leave. This place starts to live its glass life. A quiet ringing echoes everywhere. It is the glasses talking. You could hear really different stories, funny fairy tales, and scary legends from the life of an ancient glass country.

One of the legends says that if a man looks through a pair of glasses for many hours on a monitor, then the glasses will be turbid. Almost all pairs of glasses laugh and say that this doesn't happen. However, one simple frame thinks differently. We will name it “Simple Pair of Glasses”. He is scared of computer screens now.
Simple Pair of Glasses fears that someone will look five hours through the glass. Especially if they are looking at a computer screen. As a result, Simple Pair of Glasses will be turbid. Finally, he will be moved to the trash can.

It's a terrible day! The man selected Simple Pair of Glasses. He is sitting at his workplace with a CRT screen desktop computer. This is a really old monitor.
The man works and drinks coffee. Again and again for many hours, but Simple Pair of Glasses is clear and transparent.
It's daylight! The Simple Pair of Glasses is no longer afraid of becoming cloudy.