The ocular lens is located at the top of the eyepiece tube and is where you position your eye during inspection. The ocular lens has a low magnification, but it works in combination with the objective lens to achieve greater magnification power. It magnifies the magnified image already captured by the objective lens, which is located at the bottom of the microscope. While the ocular lens focuses purely on magnification, the objective lens performs other functions such as controlling resolution and the power of the microscope.