Reply by Joe Gwinn June 22, 20222022-06-22
On Tue, 21 Jun 2022 17:17:12 -0700, John Larkin
<jlarkin@highland_atwork_technology.com> wrote:

>On Tue, 21 Jun 2022 12:54:47 -0400, Phil Hobbs ><pcdhSpamMeSenseless@electrooptical.net> wrote: > >>Fred Bloggs wrote: >>> On Sunday, June 19, 2022 at 7:30:42 PM UTC-4, bitrex wrote: >>>> On 6/19/2022 9:41 AM, Anthony William Sloman wrote: >>>>> On Sunday, June 19, 2022 at 3:29:44 PM UTC+2, bitrex wrote: >>>>>> On 6/15/2022 4:49 PM, John Larkin wrote: >>>>>>> On Wed, 15 Jun 2022 10:34:22 +1000, David Eather >>>>>>> <eatREM...@tpg.com.au> wrote: >>>>>>>> On 15/06/2022 3:29 am, John Larkin wrote: >>>>>>>>> Eyesight is important in this biz. >>>>>>>>> >>>>>>>>> Make sure you get lots of vitamin A, but not too much. >>>>>>>>> It's good for your retinas and can help prevent macular >>>>>>>>> degeneration. >>>>>>>>> >>>>>>>> >>>>>>>> You might also like to try Taurine which has heaps of >>>>>>>> research showing a positive (albeit sometimes small) >>>>>>>> benefit. And Lutein which has a long history of use to >>>>>>>> prevent and treat MD. >>>>>>>> >>>>>>>> I might be on JL's shit list so can someone who isn't >>>>>>>> respond so he see's this - nothing worse than sitting in >>>>>>>> the dark if you don't have to. >>>>>>> >>>>>>> There are a few people here who are not worth reading, much >>>>>>> less responding to, but you're not one of them. >>>>> >>>>> By which John Larkin means that you haven't pointed out that he's >>>>> been an idiot all that often. >>>>> >>>>>>> Eyesight is not a very far off-topic issue for electronic >>>>>>> designers. >>>>>> >>>>>>> Our biz is very visual and often the parts are hard to see. >>>>> >>>>> Not if you have the right optical tools. Low power long working >>>>> distance microscopes can be very useful. >>>>> >>>>>> My problem at 43 such as it is at 43 y/o is my distance vision >>>>>> is excellent, 20/15, but I'm just starting to notice the >>>>>> effects of presbyopia enough for some small labels to be >>>>>> troublesome... >>>>> >>>>> Starting off short-sighted in at least one eye can be very handy. >>>>> For years I just took off my spectacles. >>>>> >>>> Never needed glasses before but I think it's definitely time for a >>>> pair of readers. My girlfriend who's worn specs most of her life >>>> has little sympathy 8-) >>> >>> Go into any department store with a pharmacy aisle and buy a 4-pack >>> of readers for ten bucks. No need to make a big deal out of it. >>> >> >>If your eyes are sufficiently close together. ;) >> >>Men's readers all come with 65-mm inter-pupillary distance, I believe, >>which will reliably give me a headache in 5 minutes. >> >>Zenni Optical will make custom single-vision glasses for a very few >>bucks. I measured my IPD with a ruler and a mirror, then ordered >>glasses with that +- 1 mm and picked the one that produced the least eye >>strain (69 mm in my case). >> >>Cheers >> >>Phil Hobbs > >I'm 69 mm too. I've seen the recommendation that reading glasses >should be a few mm closer.
Yes, to handle convergence at close distances. IPD is measured for targets at infinity. Joe Gwinn
Reply by Fred Bloggs June 21, 20222022-06-21
On Tuesday, June 21, 2022 at 12:55:04 PM UTC-4, Phil Hobbs wrote:
> Fred Bloggs wrote: > > On Sunday, June 19, 2022 at 7:30:42 PM UTC-4, bitrex wrote: > >> On 6/19/2022 9:41 AM, Anthony William Sloman wrote: > >>> On Sunday, June 19, 2022 at 3:29:44 PM UTC+2, bitrex wrote: > >>>> On 6/15/2022 4:49 PM, John Larkin wrote: > >>>>> On Wed, 15 Jun 2022 10:34:22 +1000, David Eather > >>>>> <eatREM...@tpg.com.au> wrote: > >>>>>> On 15/06/2022 3:29 am, John Larkin wrote: > >>>>>>> Eyesight is important in this biz. > >>>>>>> > >>>>>>> Make sure you get lots of vitamin A, but not too much. > >>>>>>> It's good for your retinas and can help prevent macular > >>>>>>> degeneration. > >>>>>>> > >>>>>> > >>>>>> You might also like to try Taurine which has heaps of > >>>>>> research showing a positive (albeit sometimes small) > >>>>>> benefit. And Lutein which has a long history of use to > >>>>>> prevent and treat MD. > >>>>>> > >>>>>> I might be on JL's shit list so can someone who isn't > >>>>>> respond so he see's this - nothing worse than sitting in > >>>>>> the dark if you don't have to. > >>>>> > >>>>> There are a few people here who are not worth reading, much > >>>>> less responding to, but you're not one of them. > >>> > >>> By which John Larkin means that you haven't pointed out that he's > >>> been an idiot all that often. > >>> > >>>>> Eyesight is not a very far off-topic issue for electronic > >>>>> designers. > >>>> > >>>>> Our biz is very visual and often the parts are hard to see. > >>> > >>> Not if you have the right optical tools. Low power long working > >>> distance microscopes can be very useful. > >>> > >>>> My problem at 43 such as it is at 43 y/o is my distance vision > >>>> is excellent, 20/15, but I'm just starting to notice the > >>>> effects of presbyopia enough for some small labels to be > >>>> troublesome... > >>> > >>> Starting off short-sighted in at least one eye can be very handy. > >>> For years I just took off my spectacles. > >>> > >> Never needed glasses before but I think it's definitely time for a > >> pair of readers. My girlfriend who's worn specs most of her life > >> has little sympathy 8-) > > > > Go into any department store with a pharmacy aisle and buy a 4-pack > > of readers for ten bucks. No need to make a big deal out of it. > > > If your eyes are sufficiently close together. ;) > > Men's readers all come with 65-mm inter-pupillary distance, I believe, > which will reliably give me a headache in 5 minutes. > > Zenni Optical will make custom single-vision glasses for a very few > bucks. I measured my IPD with a ruler and a mirror, then ordered > glasses with that +- 1 mm and picked the one that produced the least eye > strain (69 mm in my case).
That must not be very critical for most people since the manufacturers sell gazillions of them. Many places let you try them on and read a test chart to determine the best magnification. If the glasses don't feel right, don't buy them. The real headache comes from requiring different magnifications for the two eyes. Readers don't accommodate that. The one stop shop is WalMart. If your $2.00 readers aren't working for you they will refund your money no questions asked. And they have a vision and glasses center in store to schedule an eye exam, obtain a prescription, and buy your prescription glasses. Actually once you have your prescription you can do everything else online and get your glasses delivered to you next day. I never see a long line of people waiting a long time to be seen as with the franchise vision centers. A lot of people equate low price with low quality, then they end up paying a high price for a low price frame from those sickening franchise vision centers. WalMart is the same quality of product and service as any of the overprice glitz vision franchises out there. https://www.walmart.com/cp/vision-centers/1078944
> > Cheers > > Phil Hobbs > > -- > Dr Philip C D Hobbs > Principal Consultant > ElectroOptical Innovations LLC / Hobbs ElectroOptics > Optics, Electro-optics, Photonics, Analog Electronics > Briarcliff Manor NY 10510 > > http://electrooptical.net > http://hobbs-eo.com
Reply by John Larkin June 21, 20222022-06-21
On Tue, 21 Jun 2022 12:54:47 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

>Fred Bloggs wrote: >> On Sunday, June 19, 2022 at 7:30:42 PM UTC-4, bitrex wrote: >>> On 6/19/2022 9:41 AM, Anthony William Sloman wrote: >>>> On Sunday, June 19, 2022 at 3:29:44 PM UTC+2, bitrex wrote: >>>>> On 6/15/2022 4:49 PM, John Larkin wrote: >>>>>> On Wed, 15 Jun 2022 10:34:22 +1000, David Eather >>>>>> <eatREM...@tpg.com.au> wrote: >>>>>>> On 15/06/2022 3:29 am, John Larkin wrote: >>>>>>>> Eyesight is important in this biz. >>>>>>>> >>>>>>>> Make sure you get lots of vitamin A, but not too much. >>>>>>>> It's good for your retinas and can help prevent macular >>>>>>>> degeneration. >>>>>>>> >>>>>>> >>>>>>> You might also like to try Taurine which has heaps of >>>>>>> research showing a positive (albeit sometimes small) >>>>>>> benefit. And Lutein which has a long history of use to >>>>>>> prevent and treat MD. >>>>>>> >>>>>>> I might be on JL's shit list so can someone who isn't >>>>>>> respond so he see's this - nothing worse than sitting in >>>>>>> the dark if you don't have to. >>>>>> >>>>>> There are a few people here who are not worth reading, much >>>>>> less responding to, but you're not one of them. >>>> >>>> By which John Larkin means that you haven't pointed out that he's >>>> been an idiot all that often. >>>> >>>>>> Eyesight is not a very far off-topic issue for electronic >>>>>> designers. >>>>> >>>>>> Our biz is very visual and often the parts are hard to see. >>>> >>>> Not if you have the right optical tools. Low power long working >>>> distance microscopes can be very useful. >>>> >>>>> My problem at 43 such as it is at 43 y/o is my distance vision >>>>> is excellent, 20/15, but I'm just starting to notice the >>>>> effects of presbyopia enough for some small labels to be >>>>> troublesome... >>>> >>>> Starting off short-sighted in at least one eye can be very handy. >>>> For years I just took off my spectacles. >>>> >>> Never needed glasses before but I think it's definitely time for a >>> pair of readers. My girlfriend who's worn specs most of her life >>> has little sympathy 8-) >> >> Go into any department store with a pharmacy aisle and buy a 4-pack >> of readers for ten bucks. No need to make a big deal out of it. >> > >If your eyes are sufficiently close together. ;) > >Men's readers all come with 65-mm inter-pupillary distance, I believe, >which will reliably give me a headache in 5 minutes. > >Zenni Optical will make custom single-vision glasses for a very few >bucks. I measured my IPD with a ruler and a mirror, then ordered >glasses with that +- 1 mm and picked the one that produced the least eye >strain (69 mm in my case). > >Cheers > >Phil Hobbs
I'm 69 mm too. I've seen the recommendation that reading glasses should be a few mm closer. -- If a man will begin with certainties, he shall end with doubts, but if he will be content to begin with doubts he shall end in certainties. Francis Bacon
Reply by Phil Hobbs June 21, 20222022-06-21
Joe Gwinn wrote:
> On Tue, 21 Jun 2022 12:54:47 -0400, Phil Hobbs > <pcdhSpamMeSenseless@electrooptical.net> wrote: > >> Fred Bloggs wrote:
<sniiip>
>>> Go into any department store with a pharmacy aisle and buy a 4-pack >>> of readers for ten bucks. No need to make a big deal out of it. >>> >> >> If your eyes are sufficiently close together. ;) >> >> Men's readers all come with 65-mm inter-pupillary distance, I believe, >> which will reliably give me a headache in 5 minutes. >> >> Zenni Optical will make custom single-vision glasses for a very few >> bucks. I measured my IPD with a ruler and a mirror, then ordered >> glasses with that +- 1 mm and picked the one that produced the least eye >> strain (69 mm in my case). > > For that wide-eyed ingenue look? > > Joe Gwinn >
That must be it. Or possibly I'm getting in touch with my inner codfish. ;) Cheers Phil Hobbs
Reply by Joe Gwinn June 21, 20222022-06-21
On Tue, 21 Jun 2022 12:54:47 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

>Fred Bloggs wrote: >> On Sunday, June 19, 2022 at 7:30:42 PM UTC-4, bitrex wrote: >>> On 6/19/2022 9:41 AM, Anthony William Sloman wrote: >>>> On Sunday, June 19, 2022 at 3:29:44 PM UTC+2, bitrex wrote: >>>>> On 6/15/2022 4:49 PM, John Larkin wrote: >>>>>> On Wed, 15 Jun 2022 10:34:22 +1000, David Eather >>>>>> <eatREM...@tpg.com.au> wrote: >>>>>>> On 15/06/2022 3:29 am, John Larkin wrote: >>>>>>>> Eyesight is important in this biz. >>>>>>>> >>>>>>>> Make sure you get lots of vitamin A, but not too much. >>>>>>>> It's good for your retinas and can help prevent macular >>>>>>>> degeneration. >>>>>>>> >>>>>>> >>>>>>> You might also like to try Taurine which has heaps of >>>>>>> research showing a positive (albeit sometimes small) >>>>>>> benefit. And Lutein which has a long history of use to >>>>>>> prevent and treat MD. >>>>>>> >>>>>>> I might be on JL's shit list so can someone who isn't >>>>>>> respond so he see's this - nothing worse than sitting in >>>>>>> the dark if you don't have to. >>>>>> >>>>>> There are a few people here who are not worth reading, much >>>>>> less responding to, but you're not one of them. >>>> >>>> By which John Larkin means that you haven't pointed out that he's >>>> been an idiot all that often. >>>> >>>>>> Eyesight is not a very far off-topic issue for electronic >>>>>> designers. >>>>> >>>>>> Our biz is very visual and often the parts are hard to see. >>>> >>>> Not if you have the right optical tools. Low power long working >>>> distance microscopes can be very useful. >>>> >>>>> My problem at 43 such as it is at 43 y/o is my distance vision >>>>> is excellent, 20/15, but I'm just starting to notice the >>>>> effects of presbyopia enough for some small labels to be >>>>> troublesome... >>>> >>>> Starting off short-sighted in at least one eye can be very handy. >>>> For years I just took off my spectacles. >>>> >>> Never needed glasses before but I think it's definitely time for a >>> pair of readers. My girlfriend who's worn specs most of her life >>> has little sympathy 8-) >> >> Go into any department store with a pharmacy aisle and buy a 4-pack >> of readers for ten bucks. No need to make a big deal out of it. >> > >If your eyes are sufficiently close together. ;) > >Men's readers all come with 65-mm inter-pupillary distance, I believe, >which will reliably give me a headache in 5 minutes. > >Zenni Optical will make custom single-vision glasses for a very few >bucks. I measured my IPD with a ruler and a mirror, then ordered >glasses with that +- 1 mm and picked the one that produced the least eye >strain (69 mm in my case).
For that wide-eyed ingenue look? Joe Gwinn
Reply by Phil Hobbs June 21, 20222022-06-21
Fred Bloggs wrote:
> On Sunday, June 19, 2022 at 7:30:42 PM UTC-4, bitrex wrote: >> On 6/19/2022 9:41 AM, Anthony William Sloman wrote: >>> On Sunday, June 19, 2022 at 3:29:44 PM UTC+2, bitrex wrote: >>>> On 6/15/2022 4:49 PM, John Larkin wrote: >>>>> On Wed, 15 Jun 2022 10:34:22 +1000, David Eather >>>>> <eatREM...@tpg.com.au> wrote: >>>>>> On 15/06/2022 3:29 am, John Larkin wrote: >>>>>>> Eyesight is important in this biz. >>>>>>> >>>>>>> Make sure you get lots of vitamin A, but not too much. >>>>>>> It's good for your retinas and can help prevent macular >>>>>>> degeneration. >>>>>>> >>>>>> >>>>>> You might also like to try Taurine which has heaps of >>>>>> research showing a positive (albeit sometimes small) >>>>>> benefit. And Lutein which has a long history of use to >>>>>> prevent and treat MD. >>>>>> >>>>>> I might be on JL's shit list so can someone who isn't >>>>>> respond so he see's this - nothing worse than sitting in >>>>>> the dark if you don't have to. >>>>> >>>>> There are a few people here who are not worth reading, much >>>>> less responding to, but you're not one of them. >>> >>> By which John Larkin means that you haven't pointed out that he's >>> been an idiot all that often. >>> >>>>> Eyesight is not a very far off-topic issue for electronic >>>>> designers. >>>> >>>>> Our biz is very visual and often the parts are hard to see. >>> >>> Not if you have the right optical tools. Low power long working >>> distance microscopes can be very useful. >>> >>>> My problem at 43 such as it is at 43 y/o is my distance vision >>>> is excellent, 20/15, but I'm just starting to notice the >>>> effects of presbyopia enough for some small labels to be >>>> troublesome... >>> >>> Starting off short-sighted in at least one eye can be very handy. >>> For years I just took off my spectacles. >>> >> Never needed glasses before but I think it's definitely time for a >> pair of readers. My girlfriend who's worn specs most of her life >> has little sympathy 8-) > > Go into any department store with a pharmacy aisle and buy a 4-pack > of readers for ten bucks. No need to make a big deal out of it. >
If your eyes are sufficiently close together. ;) Men's readers all come with 65-mm inter-pupillary distance, I believe, which will reliably give me a headache in 5 minutes. Zenni Optical will make custom single-vision glasses for a very few bucks. I measured my IPD with a ruler and a mirror, then ordered glasses with that +- 1 mm and picked the one that produced the least eye strain (69 mm in my case). Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
Reply by Fred Bloggs June 21, 20222022-06-21
On Sunday, June 19, 2022 at 7:30:42 PM UTC-4, bitrex wrote:
> On 6/19/2022 9:41 AM, Anthony William Sloman wrote: > > On Sunday, June 19, 2022 at 3:29:44 PM UTC+2, bitrex wrote: > >> On 6/15/2022 4:49 PM, John Larkin wrote: > >>> On Wed, 15 Jun 2022 10:34:22 +1000, David Eather <eatREM...@tpg.com.au> wrote: > >>>> On 15/06/2022 3:29 am, John Larkin wrote: > >>>>> Eyesight is important in this biz. > >>>>> > >>>>> Make sure you get lots of vitamin A, but not too much. It's good for > >>>>> your retinas and can help prevent macular degeneration. > >>>>> > >>>> > >>>> You might also like to try Taurine which has heaps of research showing a > >>>> positive (albeit sometimes small) benefit. And Lutein which has a long > >>>> history of use to prevent and treat MD. > >>>> > >>>> I might be on JL's shit list so can someone who isn't respond so he > >>>> see's this - nothing worse than sitting in the dark if you don't have to. > >>> > >>> There are a few people here who are not worth reading, much less responding to, but you're not one of them. > > > > By which John Larkin means that you haven't pointed out that he's been an idiot all that often. > > > >>> Eyesight is not a very far off-topic issue for electronic designers. > >> > >>> Our biz is very visual and often the parts are hard to see. > > > > Not if you have the right optical tools. Low power long working distance microscopes can be very useful. > > > >> My problem at 43 such as it is at 43 y/o is my distance vision is excellent, 20/15, but I'm just starting to notice the effects of presbyopia enough for some small labels to be troublesome... > > > > Starting off short-sighted in at least one eye can be very handy. For years I just took off my spectacles. > > > Never needed glasses before but I think it's definitely time for a pair > of readers. My girlfriend who's worn specs most of her life has little > sympathy 8-)
Go into any department store with a pharmacy aisle and buy a 4-pack of readers for ten bucks. No need to make a big deal out of it.
Reply by bitrex June 19, 20222022-06-19
On 6/19/2022 9:41 AM, Anthony William Sloman wrote:
> On Sunday, June 19, 2022 at 3:29:44 PM UTC+2, bitrex wrote: >> On 6/15/2022 4:49 PM, John Larkin wrote: >>> On Wed, 15 Jun 2022 10:34:22 +1000, David Eather <eatREM...@tpg.com.au> wrote: >>>> On 15/06/2022 3:29 am, John Larkin wrote: >>>>> Eyesight is important in this biz. >>>>> >>>>> Make sure you get lots of vitamin A, but not too much. It's good for >>>>> your retinas and can help prevent macular degeneration. >>>>> >>>> >>>> You might also like to try Taurine which has heaps of research showing a >>>> positive (albeit sometimes small) benefit. And Lutein which has a long >>>> history of use to prevent and treat MD. >>>> >>>> I might be on JL's shit list so can someone who isn't respond so he >>>> see's this - nothing worse than sitting in the dark if you don't have to. >>> >>> There are a few people here who are not worth reading, much less responding to, but you're not one of them. > > By which John Larkin means that you haven't pointed out that he's been an idiot all that often. > >>> Eyesight is not a very far off-topic issue for electronic designers. >> >>> Our biz is very visual and often the parts are hard to see. > > Not if you have the right optical tools. Low power long working distance microscopes can be very useful. > >> My problem at 43 such as it is at 43 y/o is my distance vision is excellent, 20/15, but I'm just starting to notice the effects of presbyopia enough for some small labels to be troublesome... > > Starting off short-sighted in at least one eye can be very handy. For years I just took off my spectacles. >
Never needed glasses before but I think it's definitely time for a pair of readers. My girlfriend who's worn specs most of her life has little sympathy 8-)
Reply by Anthony William Sloman June 19, 20222022-06-19
On Sunday, June 19, 2022 at 3:35:53 PM UTC+2, bitrex wrote:
> On 6/19/2022 9:29 AM, bitrex wrote: > > On 6/15/2022 4:49 PM, John Larkin wrote: > >> On Wed, 15 Jun 2022 10:34:22 +1000, David Eather > >> <eatREM...@tpg.com.au> wrote: > >> > >>> On 15/06/2022 3:29 am, John Larkin wrote: > >>>> Eyesight is important in this biz. > >>>> > >>>> Make sure you get lots of vitamin A, but not too much. It's good for > >>>> your retinas and can help prevent macular degeneration. > >>>> > >>> > >>> You might also like to try Taurine which has heaps of research showing a > >>> positive (albeit sometimes small) benefit. And Lutein which has a long > >>> history of use to prevent and treat MD. > >>> > >>> I might be on JL's shit list so can someone who isn't respond so he > >>> see's this - nothing worse than sitting in the dark if you don't have > >>> to. > >> > >> There are a few people here who are not worth reading, much less > >> responding to, but you're not one of them. > >> > >> Eyesight is not a very far off-topic issue for electronic designers. > >> Our biz is very visual and often the parts are hard to see. > >> > > > > My problem at 43 such as it is at 43 y/o is my distance vision is > > excellent, 20/15, but I'm just starting to notice the effects of > > presbyopia enough for some small labels to be troublesome... > > > Please substitute "My problem such as it is at 43 y/o", technical > difficulties unrelated to age I hope.
The lens hardens up as you get older, and you lose accommodation. Bringing small print closer to your eyes doesn't help the way it used to. Bifocals used to be the solution, but they advertise the fact that you are getting old. Continuous grind lenses are more expensive but you get a continuously variable focus, and they look just like regular spectacles (until you look very carefully). -- Bill Sloman, Sydney
Reply by Anthony William Sloman June 19, 20222022-06-19
On Sunday, June 19, 2022 at 3:29:44 PM UTC+2, bitrex wrote:
> On 6/15/2022 4:49 PM, John Larkin wrote: > > On Wed, 15 Jun 2022 10:34:22 +1000, David Eather <eatREM...@tpg.com.au> wrote: > >> On 15/06/2022 3:29 am, John Larkin wrote: > >>> Eyesight is important in this biz. > >>> > >>> Make sure you get lots of vitamin A, but not too much. It's good for > >>> your retinas and can help prevent macular degeneration. > >>> > >> > >> You might also like to try Taurine which has heaps of research showing a > >> positive (albeit sometimes small) benefit. And Lutein which has a long > >> history of use to prevent and treat MD. > >> > >> I might be on JL's shit list so can someone who isn't respond so he > >> see's this - nothing worse than sitting in the dark if you don't have to. > > > > There are a few people here who are not worth reading, much less responding to, but you're not one of them.
By which John Larkin means that you haven't pointed out that he's been an idiot all that often.
> > Eyesight is not a very far off-topic issue for electronic designers. > > > Our biz is very visual and often the parts are hard to see.
Not if you have the right optical tools. Low power long working distance microscopes can be very useful.
> My problem at 43 such as it is at 43 y/o is my distance vision is excellent, 20/15, but I'm just starting to notice the effects of presbyopia enough for some small labels to be troublesome...
Starting off short-sighted in at least one eye can be very handy. For years I just took off my spectacles. -- Bill Sloman, Sydney