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Book Magnifier InformationAfter 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 a book magnifier with light or book magnifier on stand will
help.
What you should consider in buying a: Hand Book Magnifier. A hand book magnifying reader or magnifying book
reader is compact, portable and usually inexpensive but after a period of time your hand
will tire. Those with a hand tremor will find a hand magnifier hard to use - Hand book magnifying
reader should be comfortable to hold.
- The magnifying
book reader lens should be distortion free.
What
you should consider in buying a Hands Free Book Magnifier A hands free book
magnifier for reading is best for long term use and a hand book magnifier for reading is used
for the short term - Allows for long duration use.
- Not portable.
- Usually more expensive
then a hand book magnifier.
- Larger viewing
area.
- Allows use of both hands
- Cord/Cordless or both.
- Lighted
or unlighted magnifier
Types Of Hands Free Book Magnifiers Binocular Headband Book Magnifier Full Book Magnifier Telesight Book Magnifier Desktop Book Magnifier Magnifying Lamps Clip on Book Magnifier Dome Book Magnifier Neck Book Magnifier
Information On Magnifier For Reading Books.. POWER/READING
DISTANCE: The
higher the power of the book magnifier for reading, magnifying book reader or book magnifying glass lens,
the closer you must get to the object being viewed and the smaller the field of view. f To strong maybe to close.
LIGHTING: A book reading magnifier
with light or book reading magnifying glass with light will provide better magnification results
as they provide a sharper and clearer image and more contrast then a non-lighted magnifier. Magnification decreases light transmission.
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 magnify a whole 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. Rules Of Magnification. - The
higher the power of the book magnifier for reading lens, the closer you must get to the object being
viewed and the smaller the field of view.
- As the power of a magnifier 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.-
Book Magnifier 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
Optometry Cares American Action Fund for Blind Children & Adults MD Support National Eye Health Education Program, | 
