<Table> <Tr> <Td> </Td> <Td> This article includes a list of references, but its sources remain unclear because it has insufficient inline citations . Please help to improve this article by introducing more precise citations . (December 2014) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article includes a list of references, but its sources remain unclear because it has insufficient inline citations . Please help to improve this article by introducing more precise citations . (December 2014) (Learn how and when to remove this template message) </Td> </Tr> <P> An eyepiece, or ocular lens, is a type of lens that is attached to a variety of optical devices such as telescopes and microscopes . It is so named because it is usually the lens that is closest to the eye when someone looks through the device . The objective lens or mirror collects light and brings it to focus creating an image . The eyepiece is placed near the focal point of the objective to magnify this image . The amount of magnification depends on the focal length of the eyepiece . </P> <P> An eyepiece consists of several "lens elements" in a housing, with a "barrel" on one end . The barrel is shaped to fit in a special opening of the instrument to which it is attached . The image can be focused by moving the eyepiece nearer and further from the objective . Most instruments have a focusing mechanism to allow movement of the shaft in which the eyepiece is mounted, without needing to manipulate the eyepiece directly . </P>

What does the eyepiece do in a microscope
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