RNIB NI's Looking Ahead, A Parent's Guide (PDF, 560kb)

Master RNIB Booklet_Layout 1 10/09/2012 15:10 Page 38
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Visual Field is the extent of space in which
objects are visible to an eye in a given position
i.e. if you fixate on an object in this distance
without moving your eye you are still able to see
the surrounding landscape. This can be reduced
in some individuals to almost a tunnel vision effect
(like looking through cardboard tubes).
A visual impairment is a term some people use
to describe significant sight loss. It cannot be
corrected with glasses. Glasses can improve the
vision a little, taking pressure off the visual system
and provide a clearer image.
Visual Pathway is where light passes from the
eye, through the retinal photoreceptors (rod and
cone cells), along the optic nerves to the brain,
were the picture is received / deciphered.
V.I.Scotland
VI Scotland has medical information about
a number of eye conditions, aimed at parents.
Their website address is:
www.viscotland.org.uk/eyeconds/a-z.html