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Table Magnifier Information
Magnifier - Rules Of Magnification.
The higher the power of the table
magnifier or tabletop magnifier the shorter the focal range(work distance) and the smaller the field of view. The high power magnifier may not be the best table mounted magnifier for you. To strong
may be to close.
Wear your reading glasses for best table magnifier results.
Our large tabletop magnifier selection
can help those with presbyopia and macular degeneration.
Field Of View: The size of the area being magnified
when viewing through a magnifying lens. The higher the power of the magnifier the smaller the field of view.
Diopter: Diopter is a measurement that is
used to calculate the power of a magnifying lens. The higher diopter will provide higher magnification. Diopter
is expressed as "D"
Power: Power is how large an object or print increases as you look through
a lens. Magnifying power is expressed as "X"
Focal Length: Measurement from the center
of the lens to to the object and be in focus.
Focal Range: The distance from the magnifying lens to the object being viewed.
Fresnel Magnifier: A flat magnifier consisting of concentric circles that can be a full page
Visual impairment (or vision impairment) is a decreased ability to see
to a degree that causes problems not fixable by usual means, such as glasses or medication. Our low vision magnifiers can
be of help.