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-- Magnifier Information Hand Held Magnifying Glass. - Select a large magnifying glass for reading with a power
that will allow you to perform your task at a comfortable distance.
- The high power magnifier may not be the best magnifier for you.
- The hand held reading magnifying glass should be comfortable to hold.
- The lens should be distortion free.
Hands Free Magnifying
Glass For Reading - Not portable.
- Usually
more expensive then a hand reading magnifying glass.
- 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 reading 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.
Large selection of hands free magnifier for reading books,
hands held reading magnifying glass, hands free large magnifying glass for reading books and lighted magnifiers
for reading newspapers. The high power magnifier may not be the best magnifying glass for
reading 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 magnifier 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 magnifier 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. Magnifier 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 magnifier lens to the
object being viewed. Fresnel Magnifier: A flat magnifier 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 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.
- High power magnifiers such as 8x must be held steady or
else they will be out of focus.
| 
4x 
3x
