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# Everything About Microscope Eyepieces

*If you're wondering about the function of a microscope's eyepiece, you've come to the right place! The eyepiece is a part of the optical system that magnifies the object you are trying to view. The eyepiece and objective are the two main parts of a microscope's optical system. In this article, we review everything you need to know about microscope eyepieces.*

You can read the full article [here]([https://carson.com/optics-university/microscope-hub/everything-about-microscope-eyepieces/](https://carson.com/optics-university/microscope-hub/everything-about-microscope-eyepieces/)).

In this article, we cover the following questions:

* What is the eyepiece of a microscope?
* Does light enter the eyepiece first in the microscope?
* What does the eyepiece do on a microscope?
* What does the ocular lens do on a microscope?
* What does "WF" mean on an eyepiece?
* What is the magnification of the eyepiece?
* How can you find the eyepiece field number (FN)?
* What is the field of view on a microscope?
* What does the number of mm (for example, 30 mm) mean on an eyepiece?
* What is the eye relief of an eyepiece?
* How do you clean microscope eyepiece lenses?
* How do you adjust microscope eyepieces?