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What Is the Working Field?

The physical area or extent of the specimen, object, or patient's eye that can be viewed and utilized through a specific optical instrument at a given magnification. It is directly related to the Field of View (FOV).

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What Is the Working Field?

The physical area or extent of the specimen, object, or patient's eye that can be viewed and utilized through a specific optical instrument at a given magnification. It is directly related to the Field of View (FOV).

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In Microscopy

In microscopy, the working field (or Field of View) is the circular area visible through the eyepiece. The size of this field decreases as the magnification increases.

In Perimetry

The term can be used synonymously with the Useful Field of View (UFOV) in cognitive vision, referring to the functional area that can be quickly processed.

Surgical Application

In ophthalmic surgery, the working field is the portion of the globe and adnexa (eyelids, etc.) that the surgeon has open access to for manipulation.

How is it different from Working Distance?

Working distance is the depth of the clear space between the lens and the specimen. Working field is the lateral size of the viewable area.

If the FOV is large, is the working field large?

Yes. The working field is the physical representation of the instrument's Field of View (FOV).

How does magnification affect the working field?

As magnification increases, the working field decreases in size.