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 is a desk magnifier or
desk magnifier? A desk magnifier
or desk magnifier consists of a magnifying lens mounted to a base or clamp on device. What power desk magnifier should I choose?
Select a magnifier with a power that will allow a comfortable work or reading
distance. The higher the power the shorter the work distance and the smaller the field
of view. The high power magnifying glass may not be the best magnifier for you. Do
I need a desk magnifier with light? A lighted magnifier will provide better
magnification results as they provide a sharper and clearer image.Our magnifiers with light are led or fluorescent
lighted and provide a soft white light to ease eye fatigue Diopter | Power | Focal Length | 3 | 1.75X | 13 inches | 5 | 2.25X | 8 inches | 8 | 3.00 | 5
inches |
Does not apply to Fresnel Lens magnifiers which have a focal range of 4 inches.
Information On Fresnel Full Page
Desk Magnifiers*: - A full page desk magnifier consists of a large Fresnel lens that allows for reading of a whole
page.
- The advantage of a hands free page magnifier is that it can be used
as a whole page magnifier.
What is a Fresnel magnifier? - A Fresnel desk magnifier consists of a flat plastic lens with concentric
grooves that permits magnified viewing.
- The focal length is about 4 inches from the object to be
viewed.
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CREDIT CARDS ACCEPTED. 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.
Links for reading and crafts. Reading
Links The American Foundation for the Blind National Library Service for the Blind and Physically Handicapped Paths To Literacy National Eye Institute American Action Fund for Blind Children & Adults MD Support National Eye Health Education Program Craft Links Knitting, Crochet, and other Needlecrafts How To Sew Basic Sewing Stitches How to Crosstitch How To Do Needlework
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