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Magnifier Information:
The focal length of a large full page magnifier is about 4 inches from
the object to be viewed. There is no full page magnifier that lays on page that will magnify. A dome magnifier lays
flat on page
Magnification reduces light transmission. A hands free full page magnifier with light or magnifying page reader with light will provide a sharper and clearer image.
A quality acrylic full page book magnifier for
reading is made of acrylic and not PVC .
A full page magnifier for reading or magnifying page reader will provide
whole page magnifier large area viewing for reading. This avoids moving your small area magnifier across the page as you read.
A Fresnel full page magnifier with light for reading,
magnifying page reader with light or full page magnifying glass with light will allow whole page
magnifying glass reading and consists of a flat plastic concentric grooves.
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 full page magnifier with light and stand,
magnifier page reader or full page magnifier will Originally invented by Augustine
Fresnel. The original Fresnel lenses were used to magnify the lighthouse beacon light. A Fresnel lens is thinner then
a ordinary convex magnifier lens This meant that more powerful and lighter lenses could be used in lighthouses.
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 page magnifier consisting of concentric
circles. Visual impairment (or vision impairment) is a decreased
ability to see to a degree that causes problems not fixable by usual means. Our low vision magnifiers can be of help.
Full Page Magnifier Links The American Foundation for the Blind National Library Service for the Blind and Physically Handicapped Paths To Literacy Classroom National Eye Institute Optometry Cares American Action Fund for Blind Children & Adults MD Support National Eye Health Education Program, | 
