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- Hello, I would like to welcome you
to the Laramy-K Optician Works Training Center,
where it has been a couple of months now,
since we did the piece on the DAL
or the Direct Addition Lenses.
I mentioned, I wanted to get my hands on a set of them
and take them for a test drive.
Well, they have arrived,
and after many, many, many weeks of delays,
for all kinds of reasons, I've got a set to run.
So, we're gonna do that,
we're gonna go over the fitting instructions,
layout instructions, blot these things up,
run them on the edger,
and then I'm going to wear them for at least 48 hours.
Maybe we could start a clock down there in the corner,
and we'll see what we think.
Let's get to it.
When Joe Webb was here with us in the training center,
he mentioned that fitting for a DAL is a critical piece
of the success of wearing the lens.
So I started with an optic cam shot
and that gives me my pupillary distance,
my heights, my angles,
personalized PDs near PDs, frame measurements,
everything that they need.
Real quick.
It says, "Duoluxs Fitting Instructions.
"The Distance Reference Point, Prism Reference Point,
"Layout Reference Point,
all coincide with the Engraving Reference Points or ERP"
I'll Put this up for you.
In other words, everything works off of a center of the lens
between the two laser etchings.
The engraving marks are about 34 millimeters apart.
Three digit addition code on the temporal side,
three digit lens code on the nasal side,
everything is 17 millimeters center
between the engraving marks.
Frame selection.
minimum recommended be of 28
and what do we have here, says,
pretty sure I got that covered pretty well.
Yeah I got 36 there, so we're good.
Fixed-hinge frame should have a minimum pantoscopic tilt
of eight degrees when fitted,
adjustable frame should have pantoscopic tilt
between eight degrees and 14.
At the bottom on mine was 17,
so I'm a little heavy on my panto,
so we may need to do a little tweaking there.
Adjusting the frame pantoscopic tilt is key for success
on all freeform multi-focal back designs
to bring the near portrait lens surface
parallel to the patient's eye.
So if we have any trouble I guess we'll start with panto
trying to figure it out.
Fitting and ordering of DAL lenses:
DAL lenses are measured
and fitted the same as progressives.
Alright, got that part down.
All right, so let's figure out our layout
part of all of this now.
Let's take a peek at these lenses.
Try to get you a good shot of that.
So you can see what these look like.
And it tells me, three digit lens,
design code or design name, nasal side,
so this is gonna be my left lens.
This is gonna be my right
and I've got my layout chart, here is my right lens,
nasal this way.
Good, all right.
I've had this frame for goodness about a year sitting around
waiting for a project like this
pick this up "Vision Expo West." I think it was.
Let's go ahead and hit the edger
and start wearing our DAL lenses.
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Okay finishing is done.
Let's clean these up.
These do not have an AR coat,
so that AR pen
really gets into that CR-39
so it can take a little alcohol to get those markings off.
Here we go.
All right, my DAL, Direct Addition Lenses.
Here it is, and I can prove this is Monday, June the first,
there's my local newspaper to prove it.
I am gonna wear these as much as I possibly can,
forcing myself to wear them
until at least Wednesday morning, June the second, third.
There we go.
I'll be back in a couple of days.
As promised, I waited a couple of days.
It is now Wednesday, June the third
and I had been wearing my DALL lenses as much as possible.
I wanted to love these lenses.
I mean, I really, really wanted to love them, but I don't.
As I mentioned, these lenses are still in development,
and I think they may still have a little ways to go.
Now with that said, I am a pretty horrible test candidate.
I don't like progresses,
I barely tolerate a lined bifocal,
I wear no distance correction unless I'm driving at night.
And I pretty much live
in a single vision intermediate pair
for the bench, for the video editing that we do,
and for all my reading.
Here is what I found while wearing the DAL lenses;
on the good side of things, distance vision,
really, really good, full field, sharp,
perfectly good distance viewing.
We had talked about no image jump and there really isn't.
It's much like you have described.
it's kind of a zoom in, zoom out effect.
We talked about no clear, blur clear,
like a blended bifocal has, and that's true.
We talked about no line and there really isn't one.
If vanity were an issue for me,
I'd certainly like these over aligned bifocal.
Now on the not-so-good side,
we have the near vision area.
They sent me both versions of the lens.
their active and their business and I tried both of them.
And I played around a lot with frame adjustments.
I can't really describe it exactly,
but there is a near sweet spot that works just fine.
But it seems like it's kind of buried practically
at the bottom of the eye wire.
And finding and holding it, it just seems a little tricky.
Now of course, these lenses are designed
specifically to big distance and near.
So it isn't a surprise that I need to hold things
quite close for me to see them clearly.
So don't get me wrong,
if I pay attention to what I'm doing I can find what I need.
But I wouldn't exactly call it natural, I think is the word,
which leads me back around to,
I'm probably not a great test case for these.
And I suspect that someone that is brand new
to wearing them, might adapt quite differently.
So am I personally tossing out my favorite old-line bifocals
and switching to a DAL?
Well, no, not yet.
I'm not.
Thank you so much to Quest and to you
and we will certainly be staying in touch
because again, I want to love these lenses.
Let's see what the future brings.
As always, thank you so much for watching.
If you're watching me on YouTube,
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and make sure that every lens in your optical world
comes from Laramy-K.
I will see you again next week.
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