How does dust get in the screen?

[Squirrelflight]

Had for two years and noticing dust in the screen, for example a pretty big dust dot that can be seen on white or light backgrounds.
How does dust get in the screen? The middle of the screen? And will it eventually go away?

 

[Asuriyan]

The glass on most MacBooks is an extra layer glued over the LCD. The unfortunate downside to this is that if there is a gap in the glue, you run the risk of contaminants getting between the glass and screen.

If you're under AppleCare, it's something that they will generally take care of. If not, it's probably not worth the hassle, as any dismantling of the screen will be as likely to let more dust in as to let you swab it out.

 

[Squirrelflight]

Thanks for your answer. No applecare, I'll live with it had the mac for over 2 years.

I don't see anything like a gap though. Maybe you can't see it. That sucks!