16
Performance
specifications
Performance
specifications
Functional
description
The
VISUPHOR
500
digital
phoropter
allows
the
subjective
refraction
for
a
patient
to
be
determined
easily
within
a
very
brief
period.
Objective
refraction
data,
as
provided
by
an
automated
refractometer/keratometer
(ARK)
can
be
transferred
directly
to
the
phoropter
control
unit
via
a
digital
interface.
It
then
can
be
used
as
the
starting
point
for
the
interactive
optimization
phase
controlled
by
patient
feedback.
In
order
to
navigate
the
individual
stages
in
the
subjective
refraction
process,
VISUPHOR
500
is
included
in
a
fully-integrated
digital
refraction
system,
which
provides
an
intuitive
user
interface
and
which
controls
the
digital
phoropter
as
well
as
the
visual
acuity
chart
projector
VISUSCREEN
(see
“VISUSCREEN
100/500
user
manual
-
Subjective
refraction
with
VISUPHOR
500”
).
VISUPHOR
500
itself
comprises
the
two
components
of
the
phoropter
head
and
the
junction
box.
To
simplify
matters,
the
phoropter
head
itself
is
referred
to
as
VISUPHOR
500.
It
includes
more
than
one
hundred
precision
lenses
which
are
swiveled
into
the
two
examination
windows
that
the
patient
looks
through.
These
movements
are
controlled
by
the
computer.
In
addition
the
distance
between
the
examination
windows
can
be
set
up
according
to
the
pupil
distance
of
the
patient,
and
the
angle
of
inclination
between
them
can
be
varied.
The
VISUPHOR
500
junction
box
(JB)
supplies
the
digital
phoropter
with
electricity.
Furthermore,
it
also
offers
two
RS232
interfaces
to
connect
an
autorefractor
and
a
digital
lensmeter
for
transferring
the
objective
refraction
data.
Communication
with
the
VISUSCREEN
control
unit
is
via
the
Bluetooth
interface.
000000-2075-933-GA-en-GB-230822
