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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 magnification is the answer.
What type magnifier is best? A hand held large magnifying
glass is best for short duration use and hands free magnifying glass with stand is best
for long duration use.
Magnifier glass power
and work distance: Select hands free large
reading magnifying glass with a power that will allow you to read at a comfortable distance.
The higher the power of the 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 lighted 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.
