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Magnifying Glass For Reading Information Types Of Hands Free Magnifying Glass For Reading Binocular Headband Reading Magnifying Glass Full Page Magnifying Glass For Reading Telesight Reading Magnifying Glass Desktop Magnifying Glass For Reading Magnifying Lamps Clip on Reading Magnifying Glass Dome Magnifying Glass For Reading Neck Magnifying GlassF or Reading
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. We stock large reading magnifying glass for newspapers
and lighted reading magnifying glass for small print What is the best reading magnifying glass?
It depends on your needs. Hand Held Reading Magnifying
Glass A hand 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. - Select
a 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 A
hands free reading magnifying glass is best for long term use. - Not portable.
- Usually more expensive then a hand magnifier.
- Larger viewing area.
- Allows
use of both hands,
- Cord/Cordless
or both.
- Lighted or unlighted magnification.
Do I need a reading magnifying glass with light? A reading magnifying
glass with light will provide better magnification results as they provide a sharper and clearer
image and more contrast then non-lighted magnifiers. 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
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 National Library Service for the Blind and Physically Handicapped Paths To Literacy Classroom |