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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? Hand held magnifiers are best for short duration use and a hands free magnifier are
best for long duration use. Magnifier glass power and work distance: Select magnifiers with a power
that will allow you to perform your task 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 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 reading magnifier.
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. Rules Of Magnification. - 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.
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![fluorescent DESK magnifying glass lamp with clamp](sitebuildercontent/sitebuilderpictures/.pond/LUX250CLIP.jpg.w180h180.jpg ""1.75x desk magnifier lamp with light"")
