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| Author |
Message |
Ellen
medicine forum beginner
Joined: 23 Mar 2006
Posts: 6
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 Posted: Sat Apr 15, 2006 8:19 pm Post subject:
Another Progressive Lens Recommendation Request
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Hi,
I'm looking for advice on a progressive lens brand.
I'm 53 years old, have worn progressives fairly successfully about 4 years
and not so successfully 3 years before that.
My rx is:
-6.75 0 0 +2.25
-4.25 50 40 +2.25
I don't seem to have much flexibility for where I can focus, and after a lot
of experimenting, found that I'm much more comfortable if I wear reading
glasses for any amount of reading, and compter glasses for working at my PC.
But I like having progressives so I don't have to take off my distance
glasses for things like reading menus, labels in stores, the display on my
cellphone, etc.
I gave up on several pairs of progressives until I tried high-index Varilux
Comfort, which I've worn ever since. But I wonder if there's something even
better for distance vision. Could someone who's knowledgeable about the
better lens brands recommend the one that's best (and has the biggest area)
for distance? I don't care if the near areas aren't as big, since I never
use them for serious focusing. The opticians here don't seem as
knowledgeable as some in this group.
Thanks in advance. |
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Ellen
medicine forum beginner
Joined: 23 Mar 2006
Posts: 6
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| Posted: Sat Apr 15, 2006 8:21 pm Post subject:
Re: Another Progressive Lens Recommendation Request
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Oops, my rx is:
My rx is:
-6.75 0 0 +2.25
-5.25 50 40 +2.25
not 4.25 as I wrote.
"Ellen" <dontusethis@x.com> wrote in message
news:_tidndQi_OHXyNzZnZ2dnUVZ_sKdnZ2d@comcast.com...
| Quote: | Hi,
I'm looking for advice on a progressive lens brand.
I'm 53 years old, have worn progressives fairly successfully about 4 years
and not so successfully 3 years before that.
My rx is:
-6.75 0 0 +2.25
-4.25 50 40 +2.25
I don't seem to have much flexibility for where I can focus, and after a
lot of experimenting, found that I'm much more comfortable if I wear
reading glasses for any amount of reading, and compter glasses for working
at my PC. But I like having progressives so I don't have to take off my
distance glasses for things like reading menus, labels in stores, the
display on my cellphone, etc.
I gave up on several pairs of progressives until I tried high-index
Varilux Comfort, which I've worn ever since. But I wonder if there's
something even better for distance vision. Could someone who's
knowledgeable about the better lens brands recommend the one that's best
(and has the biggest area) for distance? I don't care if the near areas
aren't as big, since I never use them for serious focusing. The opticians
here don't seem as knowledgeable as some in this group.
Thanks in advance.
|
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Mark A
medicine forum Guru Wannabe
Joined: 30 Apr 2005
Posts: 226
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| Posted: Sun Apr 16, 2006 1:16 am Post subject:
Re: Another Progressive Lens Recommendation Request
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"Ellen" <dontusethis@x.com> wrote in message
news:_tidndQi_OHXyNzZnZ2dnUVZ_sKdnZ2d@comcast.com...
| Quote: | Hi,
I'm looking for advice on a progressive lens brand.
I'm 53 years old, have worn progressives fairly successfully about 4 years
and not so successfully 3 years before that.
My rx is:
-6.75 0 0 +2.25
-4.25 50 40 +2.25
I don't seem to have much flexibility for where I can focus, and after a
lot of experimenting, found that I'm much more comfortable if I wear
reading glasses for any amount of reading, and compter glasses for working
at my PC. But I like having progressives so I don't have to take off my
distance glasses for things like reading menus, labels in stores, the
display on my cellphone, etc.
I gave up on several pairs of progressives until I tried high-index
Varilux Comfort, which I've worn ever since. But I wonder if there's
something even better for distance vision. Could someone who's
knowledgeable about the better lens brands recommend the one that's best
(and has the biggest area) for distance? I don't care if the near areas
aren't as big, since I never use them for serious focusing. The opticians
here don't seem as knowledgeable as some in this group.
Thanks in advance.
|
I would look at the high end Rodenstocks that are custom ground to your Rx.
Most other lenses are made in one of 4-5 base curves, and the ground to your
Rx from that, but the base curves are not always optimal for any given Rx. |
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Dennis Roark
medicine forum beginner
Joined: 20 Feb 2005
Posts: 4
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| Posted: Sun Apr 16, 2006 3:46 am Post subject:
Re: Another Progressive Lens Recommendation Request
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"Ellen" <dontusethis@x.com> wrote in
news:_tidndQi_OHXyNzZnZ2dnUVZ_sKdnZ2d@comcast.com:
| Quote: | Hi,
I'm looking for advice on a progressive lens brand.
I'm 53 years old, have worn progressives fairly successfully about 4
years and not so successfully 3 years before that.
My rx is:
-6.75 0 0 +2.25
-4.25 50 40 +2.25
I don't seem to have much flexibility for where I can focus, and after
a lot of experimenting, found that I'm much more comfortable if I wear
reading glasses for any amount of reading, and compter glasses for
working at my PC. But I like having progressives so I don't have to
take off my distance glasses for things like reading menus, labels in
stores, the display on my cellphone, etc.
I gave up on several pairs of progressives until I tried high-index
Varilux Comfort, which I've worn ever since. But I wonder if there's
something even better for distance vision. Could someone who's
knowledgeable about the better lens brands recommend the one that's
best (and has the biggest area) for distance? I don't care if the near
areas aren't as big, since I never use them for serious focusing. The
opticians here don't seem as knowledgeable as some in this group.
Thanks in advance.
|
I switched about 18 months ago from the Comforts to J&J Definity, after
about a year of searching. My prescription is similar to yours, with
greater astigmatism. I couldn't be happier. They have to be ground at
J&J, though that may change since I understand that Varilux was buying
them out. Not many prescribers carry them, but if you can find one,
that might be a good choice. I teach and spend a great deal of time on
the computer. I first intended to use separate computer lenses, but the
transition is so smooth from near to far, and so wide with little
distortion, that I find these excellent for computer use as well.
--
Dennis Roark
denro@sio.NOSPAMmidco.net
Starting Points:
http://sio.midco.net/denro/www |
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Mark A
medicine forum Guru Wannabe
Joined: 30 Apr 2005
Posts: 226
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| Posted: Sun Apr 16, 2006 6:23 am Post subject:
Re: Another Progressive Lens Recommendation Request
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"Dennis Roark" <denro@NOSPsio.midco.net> wrote in message
news:Xns97A6E7C00F409denromidconet@216.196.97.142...
| Quote: |
I switched about 18 months ago from the Comforts to J&J Definity, after
about a year of searching. My prescription is similar to yours, with
greater astigmatism. I couldn't be happier. They have to be ground at
J&J, though that may change since I understand that Varilux was buying
them out. Not many prescribers carry them, but if you can find one,
that might be a good choice. I teach and spend a great deal of time on
the computer. I first intended to use separate computer lenses, but the
transition is so smooth from near to far, and so wide with little
distortion, that I find these excellent for computer use as well.
--
Dennis Roark
|
Definity is now owned by Essilor. Varilux is just one of the brand names
owned by Essilor. At least so far, it appears that Definity will be marketed
under its own brand name (not Varilux).
The Definity splits the add power over the front and back surfaces of the
lens, and needs to be made on specialized equipment designed for that
purpose. So, even thought they are now owned by Essilor, the are still made
on the same equipment.
Definity claims that splitting the add power on the front and back surfaces
on the lens produces less peripheral distortion than most other progressive
lenses . Another unique features of Definity is that there is a reduction in
power below the reading zone, which would help you looking down where you
are walking. It also features a wide intermediate zone, which would be good
for many computer users.
Definity is one the lens designs that should be considered by anyone looking
at a premium lens design, in addition to the others already mentioned.
There are about 200 distributors in the US that carry Definity, so any
independent optical shop or OD can get them. Sometimes even independent
optical are lazy and only like dealing with certain labs, but you should be
able to find someone who will order them for you, especially if they deal
with other Essilor/Varilux products. |
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Quick
medicine forum Guru
Joined: 19 Jun 2005
Posts: 343
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| Posted: Sun Apr 16, 2006 9:05 pm Post subject:
Re: Another Progressive Lens Recommendation Request
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Mark A wrote:
| Quote: |
Definity is now owned by Essilor. Varilux is just one of
the brand names owned by Essilor. At least so far, it
appears that Definity will be marketed under its own
brand name (not Varilux).
The Definity splits the add power over the front and back
surfaces of the lens, and needs to be made on specialized
equipment designed for that purpose. So, even thought
they are now owned by Essilor, the are still made on the
same equipment.
|
Any thoughts/opinions/feedback on the Physio 360?
-Quick |
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CatmanX
medicine forum Guru
Joined: 17 May 2005
Posts: 367
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| Posted: Sun Apr 16, 2006 10:55 pm Post subject:
Re: Another Progressive Lens Recommendation Request
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If you have been happy with comfort lenses, then a switch to panamic
should do the trick.
There is better peripheral vision and a slightly shorter corridor.
Essilor wouldn't release a lens after comfort until they came up with
something significantly better - the Panamic was it. All my comfort
wearers are now wearing these happily.
dr grant |
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William Stacy
medicine forum Guru
Joined: 01 May 2005
Posts: 1177
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| Posted: Mon Apr 17, 2006 2:49 pm Post subject:
Re: Another Progressive Lens Recommendation Request
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CatmanX wrote:
| Quote: | If you have been happy with comfort lenses, then a switch to panamic
should do the trick.
There is better peripheral vision and a slightly shorter corridor.
Essilor wouldn't release a lens after comfort until they came up with
something significantly better - the Panamic was it. All my comfort
wearers are now wearing these happily.
dr grant
Panamic is on it's way out. Was a dud and will not be available much |
longer.
w.stacy, o.d. |
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Ellen
medicine forum beginner
Joined: 23 Mar 2006
Posts: 6
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| Posted: Mon Apr 17, 2006 8:15 pm Post subject:
Re: Another Progressive Lens Recommendation Request
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Is there something else you'd recommend?
I know I have to talk to a good optician, but there aren't very many nearby,
and I'd really like to go in with at least a good idea of something to ask
about that would give me the best distance vision.
Thanks,
Ellen
"William Stacy" <wstacy@obase.net> wrote in message
news:%VN0g.16510$tN3.10510@newssvr27.news.prodigy.net...
| Quote: | CatmanX wrote:
If you have been happy with comfort lenses, then a switch to panamic
should do the trick.
There is better peripheral vision and a slightly shorter corridor.
Essilor wouldn't release a lens after comfort until they came up with
something significantly better - the Panamic was it. All my comfort
wearers are now wearing these happily.
dr grant
Panamic is on it's way out. Was a dud and will not be available much
longer.
w.stacy, o.d. |
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Robert Martellaro
medicine forum Guru Wannabe
Joined: 03 May 2005
Posts: 187
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| Posted: Mon Apr 17, 2006 8:56 pm Post subject:
Re: Another Progressive Lens Recommendation Request
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On Sat, 15 Apr 2006 16:19:16 -0400, "Ellen" <dontusethis@x.com> wrote:
| Quote: | Hi,
I'm looking for advice on a progressive lens brand.
I'm 53 years old, have worn progressives fairly successfully about 4 years
and not so successfully 3 years before that.
My rx is:
-6.75 0 0 +2.25
-4.25 50 40 +2.25
I don't seem to have much flexibility for where I can focus, and after a lot
of experimenting, found that I'm much more comfortable if I wear reading
glasses for any amount of reading, and compter glasses for working at my PC.
But I like having progressives so I don't have to take off my distance
glasses for things like reading menus, labels in stores, the display on my
cellphone, etc.
I gave up on several pairs of progressives until I tried high-index Varilux
Comfort, which I've worn ever since. But I wonder if there's something even
better for distance vision. Could someone who's knowledgeable about the
better lens brands recommend the one that's best (and has the biggest area)
for distance? I don't care if the near areas aren't as big, since I never
use them for serious focusing. The opticians here don't seem as
knowledgeable as some in this group.
Thanks in advance.
|
Gradal Top/Zeiss and Genesis/Shamir are essentially one two for distance
peripheral sharpness and comfort. Don't use poly or index over 1.60.
Hope this helps
Robert Martellaro
~~~~~~~~~~~~~~~~~~
Optician/Owner
Roberts Optical
~~~~~~~~~~~~~~~~~~
"If a million people believe a foolish thing, it is still a foolish thing."
- Anatole France |
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Ellen
medicine forum beginner
Joined: 23 Mar 2006
Posts: 6
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| Posted: Tue Apr 18, 2006 4:08 pm Post subject:
Re: Another Progressive Lens Recommendation Request
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Hi,
Thanks, yes it does. I was hoping to get a reply from you. I'll try to get
one of those 2 brands.
I knew about not getting polycarbonate, but not about higher index, so I'll
add that to my list.
Thanks again,
Ellen
"Robert Martellaro" <robopt@nospam.com> wrote in message
news:vpv7421dbh8oe506rf83f5ep4rilci4m3d@4ax.com...
| Quote: |
Gradal Top/Zeiss and Genesis/Shamir are essentially one two for distance
peripheral sharpness and comfort. Don't use poly or index over 1.60.
Hope this helps
Robert Martellaro
~~~~~~~~~~~~~~~~~~
Optician/Owner
Roberts Optical
~~~~~~~~~~~~~~~~~~
"If a million people believe a foolish thing, it is still a foolish
thing."
- Anatole France |
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Robert Martellaro
medicine forum Guru Wannabe
Joined: 03 May 2005
Posts: 187
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| Posted: Tue Apr 18, 2006 7:02 pm Post subject:
Re: Another Progressive Lens Recommendation Request
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On Tue, 18 Apr 2006 12:08:31 -0400, "Ellen" <dontusethis@x.com> wrote:
| Quote: | Hi,
Thanks, yes it does. I was hoping to get a reply from you. I'll try to get
one of those 2 brands.
I knew about not getting polycarbonate, but not about higher index, so I'll
add that to my list.
Thanks again,
Ellen
"Robert Martellaro" <robopt@nospam.com> wrote in message
news:vpv7421dbh8oe506rf83f5ep4rilci4m3d@4ax.com...
Gradal Top/Zeiss and Genesis/Shamir are essentially one two for distance
peripheral sharpness and comfort. Don't use poly or index over 1.60.
Hope this helps
Robert Martellaro
~~~~~~~~~~~~~~~~~~
Optician/Owner
Roberts Optical
~~~~~~~~~~~~~~~~~~
"If a million people believe a foolish thing, it is still a foolish
thing."
- Anatole France
|
Ellen,
The Zeiss lens should be readily available and would be my first choice.
The problem with indexes over 1.60 (one possible exception-Hoya's 1.70) is that
they have higher dispersion (lower abbe numbers) than other materials. If the
lens power is strong enough, there will be some degree of blur as you look away
from the lens center. The amount of blur is determined by the amount of prism
induced (power times distance) divided by the materials Abbe number. The formula
is TCA= P/V where TCA is trans (lateral) chromatic aberration, P is prism, and V
is the material's Abbe number. Jalie has written that .10 prism diopters is
enough to be a concern, and Torgersen says that .16^ is enough to decrease
acuity by one line. That seems to correspond with my personal experience (my Rx
is -4.50) and from feedback from my clients.
However, some folks don't find this to be too much of a problem, depending on
the degree of blurring of course, and may be partially due to how sensitive one
is to these aberrations, and to how often and how far one looks or needs to look
off-axis. Single vision lens wearers can turn their head and avoid the blur for
instance, with multifocal wearers being forced to look down and away from the
lens center 10mm to 15mm (or more) to reach the near focus.
You have stated a preference for the best possible distance off-axis/center
vision and tend to use separate glasses for extended near tasks. In this case I
would look for ways to decrease TCA as well as minimizing oblique astigmatism
and power error. Using your Rx for the right eye (-6.75), a lens with an Abbe of
32 induces .17^of TCA when the gaze is 8mm from the lens center, enough to cause
noticeable blur. Changing to a 42 Abbe lens (1.60 index of refraction) decreases
TCA to .13^, much less likely to be noticeable.
Robert Martellaro
~~~~~~~~~~~~~~~~~~
Optician/Owner
Roberts Optical
~~~~~~~~~~~~~~~~~~
"If a million people believe a foolish thing, it is still a foolish thing."
- Anatole France |
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Mark A
medicine forum Guru Wannabe
Joined: 30 Apr 2005
Posts: 226
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| Posted: Wed Apr 19, 2006 12:21 am Post subject:
Re: Another Progressive Lens Recommendation Request
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"Robert Martellaro" <robopt@nospam.com> wrote in message ..
| Quote: | snip>.
Changing to a 42 Abbe lens (1.60 index of refraction) decreases
TCA to .13^, much less likely to be noticeable.
Robert Martellaro
~~~~~~~~~~~~~~~~~~
Optician/Owner
Roberts Optical
|
Which brands of 1.60 have an abbe of 42. Does that include Varilux
(Essilor)? |
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Ellen
medicine forum beginner
Joined: 23 Mar 2006
Posts: 6
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| Posted: Wed Apr 19, 2006 2:26 pm Post subject:
Re: Another Progressive Lens Recommendation Request
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Thanks to everyone for the helpful info and recommendations. I really
appreciate it! |
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Robert Martellaro
medicine forum Guru Wannabe
Joined: 03 May 2005
Posts: 187
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| Posted: Wed Apr 19, 2006 9:57 pm Post subject:
Re: Another Progressive Lens Recommendation Request
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On Tue, 18 Apr 2006 18:21:07 -0600, "Mark A" <nobody@nowhere.com> wrote:
| Quote: | "Robert Martellaro" <robopt@nospam.com> wrote in message ..
snip>.
Changing to a 42 Abbe lens (1.60 index of refraction) decreases
TCA to .13^, much less likely to be noticeable.
Robert Martellaro
~~~~~~~~~~~~~~~~~~
Optician/Owner
Roberts Optical
Which brands of 1.60 have an abbe of 42. Does that include Varilux
(Essilor)?
|
I'm pretty sure all of the major manufactuers have switched to 42 Abbe 1.60
index. Mitsui Toatsu Chemical supplies most of the industries hi-index
materials. The MR-6 material was the old 1.60 that had an Abbe number of 36, the
latest is MR-8 with an Abbe of 42. |
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