The eyepiece, also known as the ocular lens, is a crucial part of a microscope that magnifies the image produced by the microscopes objective so that it can be seen by the human eye. It is the lens that the viewer looks through to see the specimen, and it usually contains a 10X or 15X power lens. The eyepiece works in combination with the microscopes objective to further magnify the intermediate image so that specimen details can be observed. The eyepiece is half of the optical system that lets you see the object with a magnified view, and the other part is the objective. The combination of the eyepiece and the objective provides you with the total magnification. The eyepiece is the last part in the path of light that enters your eye, so you can view your sample.