Retain your independence and enhance your lifestyle
with a desktop video magnifier from Freedom Vision
Who should
have a desktop video magnifier?
Anyone with macular degeneration, diabetic retinopathy,
glaucoma, cataracts, retinitis pigmentosa (RP), and other vision
conditions that cause a visual impairment whereby the person
finds it inconvenient, difficult or impossible to use optical
magnifiers to do their daily reading and writing tasks. Desktop
video magnifier models are considered stationary units (see
Products � Portables to view portable video magnifiers).
Most users of desktop video magnifiers are seniors with
age-related macular degeneration. However, the variety of
visual impairments cross all age groups.
What
is a Video Magnifier?
Desktop video magnifiers are commonly used for
reading and writing tasks like:
�
Browse newspaper and magazine articles
�
Sort your daily mail
�
Read prescriptions on bottles
�
Read recipes in the kitchen
�
View photographs in vibrant color
�
Write your own checks
�
Address envelopes
� and many more daily living tasks
Variable Magnification
Unlike optical magnifiers, video magnifiers offer low vision
user a wide range of magnification, often 3x - 45x on a 14"
screen and 4x - 60x on a 19" screen. Since many reading
materials have several different print sizes on a page, the user
can easily change the magnification to the required setting by
the simple press on a button or turn of a knob. Today, almost all
desktop video magnifiers are also auto focus cameras, which is
one of the most helpful technology enhancements over the past
several years.
Image Brightness
Besides magnification, proper lighting and good contrast
are essential for someone coping with low vision. Video magnifiers
feature the brightness and contrast of a video screen. Many
models offer adjustable brightness levels so the user may set
their most comfortable brightness image And, depending on the
contrast of the print quality, paper quality or type, or font
style of the reading material, the user may also want to vary
the brightness setting Most desktop video magnifiers feature
built-in lighting, usually fluorescent light bulbs, to
illuminate the reading area under the camera, however, some of
the newer desktop models are featuring white LED lighting which
provide a glare-free illumination and are long-lasting (100,000
hours of use), unlike fluorescent bulbs which cast glare and
commonly last for 2,500 - 5,000 hours. of use), unlike
fluorescent bulbs which casts a glare and commonly operate for
2,500 to 5,000 of use. Since many reading materials have
several different print sizes on a page, the user can easily
change the magnification to the required setting by the simple
press on a button or turn of a knob. Today, almost all desktop
video magnifiers are also auto focus cameras, which is one of
the most helpful technology enhancements over the past several
years.
Choice of Monitor Size
Desktop video magnifiers are available in a variety of
monitor sizes. The most common screen sizes are 14" or 15",17",
19" and 22" screens. Most models feature an integrated display
screen. The monitor is either �In-line� (meaning the display
screen is located directly above the camera and x/y moveable
table so the user sits directly �in-line�) or �side-by-side�
(meaning the camera is positioned alongside the monitor). Since
the early 1980s,In-line desktop video magnifiers are the most
popular models. The magnification range and field of view (how
many vertical lines and horizontal letters are displayed on the
screen) will vary slightly depending on the size of the screen.
Commonly, magnification will range from 4x � 50x on a 14" or 15"
screen and from 4x � 60x on a 19"-22" screen. Your choice of screen
size is for most users more a personal choice rather than a
vision decision.