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Magnifying Glass Information Types
Of Hands Free Reading Magnifying Glass Binocular Headband Reading Magnifying Glass Full Page Reading Magnifying Glass Telesight Reading Magnifying Glass Desktop Reading Magnifyin g Glass Magnifying Lamps Clip on Reading Magnifying Glass Dome Reading Magnifying Glass Neck Reading Magnifying Glass After the age of about forty you will experience a problem reading and tasks involving close detail
work. This eye condition is called presbyopia and a reading magnifying glass is the answer. What is best reading magnifying glass?
It depends on your needs. Hand Held Reading Magnifying
Glass . A hand held reading magnifying glass is
compact, portable and usually inexpensive but after a period of time your hand will tire. A
hand reading magnifying glass is used for the short term. Hands Free Reading Magnifying Glass . There
are many types of hands free magnifiers such as head magnifying glass, desk magnifying glass and magnifying
lamps. A hands free reading magnifying glass is best for long term use. Hand Held Reading Magnifying Glass
- Select a reading magnifying glass with a power that
will allow you to perform your task at a comfortable distance.
- The high power magnifying glass may not be the best magnifying glass for you.
- The hand held magnifying glass should be comfortable to
hold.
- The lens should be distortion
free.
Hands Free Reading Magnifying Glass - Not
portable.
- Usually more expensive
then a hand magnifier.
- Larger
viewing area.
- Allows use
of both hands for reading,
- Cord/Cordless
or both.
- Lighted or unlighted magnification.
Power Selection. - The
higher the power of the magnifying glass the shorter the focal range and the smaller the field of
view.
- Magnification powers can range from 1.75X up to 8X.
- A reading magnifying glass with very high power may not be your best
choice.
Diopter | Power | Focal Range | | | 3 | 1.75x | 13" | | | 4 | 2.00x | 12" | | | 5 | 2.25x | 8" | | | 7 | 2.75x | 5.5" | | | 8 | 2.00x | 5" | | | 9 | 3.25x | 4.5" | | | 10 | 3.50x | 4" | | | 11 | 3.75x | 3.8" | | | 11.5 | 3.85x | 3.5" | | | 13 | 4.25x | 3" | | |
 Eye-chart
provided by Wikipedia The high power magnifying glass may not be the best magnifying glass for
reading for you. Our large reading magnifying
glass 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 Magnifying Glass : A flat magnifying glass consisting
of concentric circles that can be a full page reading magnifying glass. 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 reading magnifying glass models 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.
Reading Magnifying Glass Links The American Foundation for the Blind The National Federation of the Blind Bookshare National Library Service for the Blind and Physically Handicapped Paths To Literacy Classroom | 
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![free standing reading magnifier with light fresnel lens](sitebuildercontent/sitebuilderpictures/aa111fullpagedeskfresnelmagnifier.jpg ""full page reading magnifier books"")
