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Magnifier glass power and work distance: Select head
magnifiers with a power that will allow you to perform your task at a comfortable distance.
The higher the power of the head mounted magnifier the
shorter the focal range(work distance) and the smaller the field of view.
The high power magnifier may not be the best magnifier for you. Our large head magnifying glasses 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 lighted head magnifiers the smaller the field of
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.
- The higher the power of the lens, the closer you must get to the object being viewed and the smaller
the field of view.
- As the power of a lens increases the diameter of the lens decreases.
- Diopter is a term used to determine
the power(magnification}of a lens. The terms are sometimes confused.
- High power magnifiers such
as 8x must be held steady or else they will be out of focus.
A craft head magnifier, head magnifying glass with light, head wearing magnifier, head magnifying glasses,
lighted head magnifier visor, head strap magnifier with light and lighted head magnifying glass provides
higher magnification then ordinary glasses and will eliminate eyestrain for reading or close work.
A head magnifier is the
same type magnifier as a binocular magnifier