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Table Magnifier Information
After the age of about forty you will experience
a problem viewing small print and tasks involving close detail work. This eye condition is called presbyopia and a table mounted magnifier with light will help.
Table Magnifier - Rules Of Magnification.
A magnifier will decrease light transmission. Either
provide your own adequate lighting or select a desk magnifier with light. A lighted desk magnifier
provides a sharper and clearer image.
For best desk magnifier results wear your glasses.
A Fresnel lens desk magnifier will magnify a whole page. A convex lens desk magnifier will magnify a smaller area but
can have higher powers.
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
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.
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.