hi welcome to another eye health episode
on my channel
in today's video we will talk about one
of the newest lens designs on the market
and that is the anti-fatigue lenses
what is it how does it work to find out
stick around the
introduction of the anti-fatigue lens
design is to answer to the ever
increasing near workload
in the past for people under 40 their
eyes focusing system is strong enough to
handle
day-to-day tasks including their near
work
but in recent years the number of hours
we spend
doing near work has skyrocketed and for
that reason
a lot of people's eyes are worked past
their limit and their comfort levels
to understand how to relieve eye strain
for near
we have to first understand what our
eyes need to do in order to focus that
near
there are mainly two things number one
our eyes
need to converge or turn inward in order
to point towards the near object you
want to look at
and secondly the accommodating or
focusing muscles in our eyes need to
exert energy
in order to change the shape of the
natural lens inside our eye
in order to bring the near object into
focus
to help you understand the situation
we're dealing with better
my analogy is that of a person wearing a
backpack
and walking to school that is 10 minutes
away for someone who's young and healthy
that's no big deal but what if we're
wearing the backpack and now we're
walking
30 minutes an hour or two to school
suddenly the backpack may not seem so
light
and the walk to school can be quite a
workout
if we can somehow lessen the load on the
backpack
or shorten the walk to school then the
journey will be
much easier similarly if we can reduce
the need of the interning of our eyes
or lessen the focusing work our eyes
need to do
then we can view near more comfortably
the general design of the anti-fatigue
lens
is to keep the top part of the lens with
the distance vision correction
needed for us to view things far away
just like our single vision lens do
but what it does is it also implements a
small
reading add power on the bottom of the
lens to lessen the workload
we need to do at near for many this
change alone can already put us back
into our comfort level
and eliminate symptoms of near eye
strain
then there are anti-fatigue lens designs
that go one step
further as to putting prisms in the
bottom of the lens
to reduce the need of the interning of
the eyes
in order to focus at near whether
someone would benefit from that design
depends on their eyes natural tendencies
to turn inward or outward
which we call phorias and that is
something the optometrist can find out
at your routine eye exam
so how do you know if the anti-fatigue
lens design
is beneficial to you start off by asking
yourself if you do
have symptoms of eye strain and
headaches with prolonged
computer or near work if the answer is
no then maybe your eyes focusing system
is still strong enough to handle your
day-to-day near tasks
and it doesn't need any lens design to
help with that
sometimes if a focusing system is
working well
on its own it doesn't like the
introduction of any change or help
and the anti-fatigue lens design runs
the risk
of introducing symptoms of inadaptation
however if you do suffer from symptoms
of eyestrain at near
then this lens design may be helpful to
you
i hope that helped you understand what
anti-fatigue lenses
are how they're designed to help relieve
eye strain at near
and how to decide if they may be
beneficial to you
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until then i'll see you in the next one
[Music]
bye
[Music]
you