6
Lens
Materials
Plastic
Much
lighter
than
glass
lenses
especially
in
heavy
prescription.
Plastic
lenses
feel
and
sit
more
comfortably
on
your
face
as
opposed
to
heavy
glass
lenses
which
leave
indentations
on
the
nose
and
slip
down
quite
often.
High
Index
Lenses
are
flatter
and
thinner
and
best
for
strong
prescriptions.
Thinner.
Have
thinner
edges
than
lenses
with
the
same
prescription
power
that
are
made
of
conventional
plastic
material.
Lighter.
Thinner
edges
require
less
lens
material,
which
reduces
the
overall
weight
of
the
lenses.
Lenses
made
of
high-index
plastic
are
lighter
than
the
same
lenses
made
in
conventional
plastic,
so
they’re
more
comfortable
to
wear.
Slimmer.
A
slimmer,
more
attractive
profile
and
reduces
the
magnified
“bug-
eye”
look
that
conventional
lenses
cause
in
strong
farsighted
prescriptions.
Polycarbonate
Polycarbonate
lenses
are
impact
resistant,
making
them
a
better
choice
for
active
adults,
sportswear,
and
safety
wear.
it
takes
a
far
greater
force
to
break
a
polycarbonate
lens
than
a
comparable
glass
lens.
The
most
appreciated
feature
of
poly
lenses
is
that
they
can
be
thinner
than
glass,
plastic
or
Trilogy
lenses.
However,
polycarbonate
does
weigh
a
fraction
more
than
Trilogy.
The
standard
for
safety
glasses,
sports
goggles
and
children's
eyewear.
Trilogy
The
remarkable
combination
of
properties
in
Trilogy
lenses-light
weight,
thinness,
structural
integrity,
superior
optics
and
outstanding
appearance-
make
them
a
great
choice
for
all
frame
styles.
With
a
specific
gravity
of
just
1.11
g/cm3,
Trilogy
lenses
practically
float
in
water
and
are
full
10%
lighter
than
even
polycarbonate
lenses.
Note:
Trilogy
lenses
are
not
available
for
prescriptions
over
-8.00
Lens
Options
 
 
For
the
best
vision
and
appearance,
it’s
a
good
idea
to
have
anti-reflective
lens
coating
(AR
coating)
applied
to
your
lenses.
AR-coated
high-index
lenses
transmit
up
to
99.5
percent
of
light
to
the
eye
for
optimum
vision.
Transitions
Transitions
lenses
automatically
change
from
clear
to
dark
in
sunlight
and
adjust
automatically
to
changing
light
conditions
-
going
from
clear
indoors
to
as
dark
as
sunglasses
in
bright,
glaring
sunlight.
Transitions
lenses
are
indoor
glasses
and
outdoor
glasses,
all
in
one.
Protects
against
UVrays.
Please
check
availability
below
and
specify
Grey
or
Brown
lenses
on
the
order
form.
Polarized
Polarized
lenses
are
the
best
choice
for
sunglasses.
Ordinary
tints
can
reduce
brightness
and
provide
UV
protection,
but
Polarized
lenses
eliminate
glare,
provide
better
color
contrast
and
improve
visual
acuity
and
vision
comfort.
Please
check
availability
below
and
specify
Grey
or
Brown
lenses
on
the
order
form.
Polarized
lenses
remain
dark
all
the
time
and
are
not
intended
for
indoor
use.
Single
Vision
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Progressives
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Flat
Top
28
Yes
Yes
Yes
N/A
Yes
N/A
Yes
Yes
Plastic
Polycarbonate
High
Index
Trilogy
Transitions
Transitions
Transitions
Transitions
Grey
Brown
Grey
Brown
Grey
Brown
Grey
Brown
Availability:
Single
Vision
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Progressives
Yes
Yes
Yes
Yes
Yes
Yes
N/A
N/A
Flat
Top
28
Yes
Yes
Yes
Yes
Yes
Yes
N/A
N/A
Plastic
Polycarbonate
High
Index
Trilogy
Polarized
Polarized
Polarized
Polarized
Grey
Brown
Grey
Brown
Grey
Brown
Grey
Brown
Availability:
Saf
eguard
Prism
Optical
offers
a
one
full
year
Safe-Guard
warranty
on
any
type
of
lenses
should
they
scratch
or
break.
Under
our
Safe-Guard
warranty
your
damaged
lenses
will
be
replaced,
within
a
year
of
purchase,
at
absolutely
no
charge
(not
even
postage).
Note:
Damaged
lenses
must
be
returned
to
us.
This
does
not
cover
lost
lenses.
Please
note
the
following:
On
lenses
made
for
frames
not
purchased
from
Prism
optical,
there
may
be
a
surcharge
for
custom
work
or
special
processing.
If
this
is
the
case
you
will
be
advised
beforehand.
Important
Notice:
Prescriptions
over
power
9.00
or
prescriptions
requiring
prism
correction
are
custom
made.
Send
in
your
prescription
for
a
price
quote
and
our
suggestions
for
lens
material
and
frames.
Prices
effective
January
2016, but may change at any time.
Prism Optical
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