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Book 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 a book magnifier with light or
book magnifier on stand will help.
The best book magnifier or book magnifying glass has a power
that will allow you to read at comfortable distance. Most people are comfortable with a reading distance of 10
to 12 inches. Our book magnifiers will ease eye strain. For best book magnifying glass results wear your
A book magnifier or a book magnifying
glass consists of a magnifying lens mounted on to a lens holder.
As the power of a magnifying glass for books increases the diameter of the lens decreases and the field
of view is smaller
magnifier with light or book magnifying glass will provide better magnification results as they
provide a sharper image. Magnifiers decrease light transmission.
What you should consider in buying a:
Hand Held Book Magnifier. A
hand held book magnifying glass 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 held book magnifying glass 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
free book magnifier is best for long term use and a hand book magnifier is used for the
- 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
Of Hands Free Book Magnifiers
Binocular Headband Book Magnifier
Full Book Magnifier
Telesight Book Magnifier
Desktop Book Magnifier
Clip on Book Magnifier
Dome Book Magnifier
Neck Book Magnifier
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 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
National Library Service for the Blind and Physically Handicapped
Paths To Literacy
American Action Fund for Blind Children & Adults
National Eye Health Education Program