More on retina and vision...

[Jan Panteltje]

https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?

 

[Martin Brown]

On 29/10/2022 05:59, Jan Panteltje wrote:

https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?

They already exist. Pentax does something like that instead of
anti-alias filtering in front of its sensor and also for shake reduction:

https://www.imaging-resource.com/PRODS/pentax-k01/pentax-k01A.HTM

See paragraph \"shake reduction\" they call it \"sensor shift\".

--
Regards,
Martin Brown

 

[Jan Panteltje]

On a sunny day (Sat, 29 Oct 2022 08:02:25 +0100) it happened Martin Brown
<\'\'\'newspam\'\'\'@nonad.co.uk> wrote in <tjij62$uc4$1@gioia.aioe.org>:

On 29/10/2022 05:59, Jan Panteltje wrote:
https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?

They already exist. Pentax does something like that instead of
anti-alias filtering in front of its sensor and also for shake reduction:

https://www.imaging-resource.com/PRODS/pentax-k01/pentax-k01A.HTM

See paragraph \"shake reduction\" they call it \"sensor shift\".

I see, some review!
What I like about my [very old now] Mustek video camera over my 48 Mpixels
smartphone as camera, is that the Mustek has a LCD viewfinder that you can flip
upwards.

But as to image quality: my Xiaomi is hard to beat at 48 M pixels.
My Canons work great too, and can be scripted with chdk, see:
https://chdk.fandom.com/wiki/CHDK

Made some nice timelaps movie from the stars looking south with that chdk and a Canon A470.

 

[a a]

On Saturday, 29 October 2022 at 07:07:15 UTC+2, Jan Panteltje wrote:

https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?

No need to get CCD vibrated if you can append CCD sensor with 2 vibrating mirrors, one in X-axis, another in Y-axis
to multiply resolution by 4 times
at the cost of reducing the number of frames by 4 times

It was one of my patent pending applications

If you watch deep space images it makes sense

 

[John Walliker]

On Saturday, 29 October 2022 at 15:21:33 UTC+1, a a wrote:

On Saturday, 29 October 2022 at 07:07:15 UTC+2, Jan Panteltje wrote:
https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?
No need to get CCD vibrated if you can append CCD sensor with 2 vibrating mirrors, one in X-axis, another in Y-axis
to multiply resolution by 4 times
at the cost of reducing the number of frames by 4 times

It was one of my patent pending applications

If you watch deep space images it makes sense

What are the patent application numbers? Which countries?

John

 

[John Larkin]

On Sat, 29 Oct 2022 04:59:56 GMT, Jan Panteltje
<pNaonStpealmtje@yahoo.com> wrote:

https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?

Speaking of retinas...

https://www.dropbox.com/s/z4kym11g2qvlgei/Retina_Repair_2022.jpg?raw=1

We don\'t know exactly why the left eye developed a macular hole; they
do that sometimes.

The good news is that it can be mostly fixed. The guy who did it is a
genius with a very steady hand.

The tomography is amazing. Just a few seconds looking at some blue
lights.

 

[Jan Panteltje]

On a sunny day (Sat, 29 Oct 2022 07:34:47 -0700) it happened John Larkin
<jlarkin@highlandSNIPMEtechnology.com> wrote in
<qrdqlhpor5v5h642dr8ida0lqjodp3gdfk@4ax.com>:

On Sat, 29 Oct 2022 04:59:56 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?

Speaking of retinas...

https://www.dropbox.com/s/z4kym11g2qvlgei/Retina_Repair_2022.jpg?raw=1

We don\'t know exactly why the left eye developed a macular hole; they
do that sometimes.

Look into a laser?

The good news is that it can be mostly fixed. The guy who did it is a
genius with a very steady hand.

The tomography is amazing. Just a few seconds looking at some blue
lights.

Yes, looks almost better now than the right eye!

What exactly does the blue light do?

 

[a a]

On Saturday, 29 October 2022 at 16:29:20 UTC+2, John Walliker wrote:

On Saturday, 29 October 2022 at 15:21:33 UTC+1, a a wrote:
On Saturday, 29 October 2022 at 07:07:15 UTC+2, Jan Panteltje wrote:
https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?
No need to get CCD vibrated if you can append CCD sensor with 2 vibrating mirrors, one in X-axis, another in Y-axis
to multiply resolution by 4 times
at the cost of reducing the number of frames by 4 times

It was one of my patent pending applications

If you watch deep space images it makes sense
What are the patent application numbers? Which countries?

John

NDA

 

[John Larkin]

On Sat, 29 Oct 2022 17:25:34 GMT, Jan Panteltje
<pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Sat, 29 Oct 2022 07:34:47 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
qrdqlhpor5v5h642dr8ida0lqjodp3gdfk@4ax.com>:

On Sat, 29 Oct 2022 04:59:56 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?

Speaking of retinas...

https://www.dropbox.com/s/z4kym11g2qvlgei/Retina_Repair_2022.jpg?raw=1

We don\'t know exactly why the left eye developed a macular hole; they
do that sometimes.

Look into a laser?

Not even a laser. One looks into a lens and sees some blue rectangles
for a few seconds. LEDs, not lasers.

The good news is that it can be mostly fixed. The guy who did it is a
genius with a very steady hand.

The tomography is amazing. Just a few seconds looking at some blue
lights.

Yes, looks almost better now than the right eye!

It does. The right eye is normal, a little puckered around the macula.
The treatment is for the doc to peel away the top two layers of cells
in a big patch of the retina, which relieves stress and lets the hole
close. Done by hand. With tweezers. It was interesting, a half hour of
wild light show.

What exactly does the blue light do?

Don\'t know. I should look it up, \"Optical coherence tomography of
macular holes.\" The original resolution is much better than what I
posted, which was scanned from a paper report.

Amazing.

Here\'s a really good tomograph.

https://retinaassociatesofgreaterphiladelphia.com/wp-content/uploads/2021/07/STAGE-3-MAC-HOLE-WITH-PSEUDO-OPERCULUM-CROPPED-WITH-RA.jpg

You can see the vitreus humor pulled back from the retina, and a bit
that it tore away.

https://en.wikipedia.org/wiki/Optical_coherence_tomography

 

[John Walliker]

On Saturday, 29 October 2022 at 18:39:27 UTC+1, a a wrote:

On Saturday, 29 October 2022 at 16:29:20 UTC+2, John Walliker wrote:
On Saturday, 29 October 2022 at 15:21:33 UTC+1, a a wrote:
On Saturday, 29 October 2022 at 07:07:15 UTC+2, Jan Panteltje wrote:
https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?
No need to get CCD vibrated if you can append CCD sensor with 2 vibrating mirrors, one in X-axis, another in Y-axis
to multiply resolution by 4 times
at the cost of reducing the number of frames by 4 times

It was one of my patent pending applications

If you watch deep space images it makes sense
What are the patent application numbers? Which countries?

John
NDA

I find it very hard to believe that you can have any \"pending\" patents at
the moment. If you really were subject to an NDA you would hardly have
told us all about it, breaking your own NDA.
Also, vibrating two mirrors is much more complicated than vibrating one
sensor (which nowadays is unlikely to be a CCD) because the use of mirrors
requires a more convoluted optical path.

John

 

[a a]

On Saturday, 29 October 2022 at 21:27:05 UTC+2, John Walliker wrote:

On Saturday, 29 October 2022 at 18:39:27 UTC+1, a a wrote:
On Saturday, 29 October 2022 at 16:29:20 UTC+2, John Walliker wrote:
On Saturday, 29 October 2022 at 15:21:33 UTC+1, a a wrote:
On Saturday, 29 October 2022 at 07:07:15 UTC+2, Jan Panteltje wrote:
https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?
No need to get CCD vibrated if you can append CCD sensor with 2 vibrating mirrors, one in X-axis, another in Y-axis
to multiply resolution by 4 times
at the cost of reducing the number of frames by 4 times

It was one of my patent pending applications

If you watch deep space images it makes sense
What are the patent application numbers? Which countries?

John
NDA
I find it very hard to believe that you can have any \"pending\" patents at
the moment. If you really were subject to an NDA you would hardly have
told us all about it, breaking your own NDA.
Also, vibrating two mirrors is much more complicated than vibrating one
sensor (which nowadays is unlikely to be a CCD) because the use of mirrors
requires a more convoluted optical path.

John

$M1 and technology is yours

 

[Lasse Langwadt Christensen]

lørdag den 29. oktober 2022 kl. 09.02.36 UTC+2 skrev Martin Brown:

On 29/10/2022 05:59, Jan Panteltje wrote:
https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?
They already exist. Pentax does something like that instead of
anti-alias filtering in front of its sensor and also for shake reduction:

https://www.imaging-resource.com/PRODS/pentax-k01/pentax-k01A.HTM

See paragraph \"shake reduction\" they call it \"sensor shift\".

https://youtu.be/440CNsY-83E

I believe it is also in some iphones

 

[Lasse Langwadt Christensen]

lørdag den 29. oktober 2022 kl. 21.27.05 UTC+2 skrev John Walliker:

On Saturday, 29 October 2022 at 18:39:27 UTC+1, a a wrote:
On Saturday, 29 October 2022 at 16:29:20 UTC+2, John Walliker wrote:
On Saturday, 29 October 2022 at 15:21:33 UTC+1, a a wrote:
On Saturday, 29 October 2022 at 07:07:15 UTC+2, Jan Panteltje wrote:
https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?
No need to get CCD vibrated if you can append CCD sensor with 2 vibrating mirrors, one in X-axis, another in Y-axis
to multiply resolution by 4 times
at the cost of reducing the number of frames by 4 times

It was one of my patent pending applications

If you watch deep space images it makes sense
What are the patent application numbers? Which countries?

John
NDA
I find it very hard to believe that you can have any \"pending\" patents at
the moment. If you really were subject to an NDA you would hardly have
told us all about it, breaking your own NDA.
Also, vibrating two mirrors is much more complicated than vibrating one
sensor (which nowadays is unlikely to be a CCD) because the use of mirrors
requires a more convoluted optical path.

inverting everything the \"a a\" character writes is a pretty good bet

 

[a a]

#shutupustupiddog

 

[Jan Panteltje]

On a sunny day (Sat, 29 Oct 2022 11:47:39 -0700) it happened John Larkin
<jlarkin@highlandSNIPMEtechnology.com> wrote in
<r7sqlhpppp3n8fhhs5nn9hf16tqddb4vcg@4ax.com>:

On Sat, 29 Oct 2022 17:25:34 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Sat, 29 Oct 2022 07:34:47 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
qrdqlhpor5v5h642dr8ida0lqjodp3gdfk@4ax.com>:

On Sat, 29 Oct 2022 04:59:56 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?

Speaking of retinas...

https://www.dropbox.com/s/z4kym11g2qvlgei/Retina_Repair_2022.jpg?raw=1

We don\'t know exactly why the left eye developed a macular hole; they
do that sometimes.

Look into a laser?

Not even a laser. One looks into a lens and sees some blue rectangles
for a few seconds. LEDs, not lasers.



The good news is that it can be mostly fixed. The guy who did it is a
genius with a very steady hand.

The tomography is amazing. Just a few seconds looking at some blue
lights.

Yes, looks almost better now than the right eye!

It does. The right eye is normal, a little puckered around the macula.
The treatment is for the doc to peel away the top two layers of cells
in a big patch of the retina, which relieves stress and lets the hole
close. Done by hand. With tweezers. It was interesting, a half hour of
wild light show.


What exactly does the blue light do?

Don\'t know. I should look it up, \"Optical coherence tomography of
macular holes.\" The original resolution is much better than what I
posted, which was scanned from a paper report.

Amazing.

Here\'s a really good tomograph.

https://retinaassociatesofgreaterphiladelphia.com/wp-content/uploads/2021/07/STAGE-3-MAC-HOLE-WITH-PSEUDO-OPERCULUM-CROPPED-WITH-
RA.jpg

You can see the vitreus humor pulled back from the retina, and a bit
that it tore away.

https://en.wikipedia.org/wiki/Optical_coherence_tomography

Thank you very much for the links
Always learning!
Very impressive that wikipedia link!

 

[Ricky]

On Saturday, October 29, 2022 at 1:39:27 PM UTC-4, a a wrote:

On Saturday, 29 October 2022 at 16:29:20 UTC+2, John Walliker wrote:
On Saturday, 29 October 2022 at 15:21:33 UTC+1, a a wrote:
On Saturday, 29 October 2022 at 07:07:15 UTC+2, Jan Panteltje wrote:
https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?
No need to get CCD vibrated if you can append CCD sensor with 2 vibrating mirrors, one in X-axis, another in Y-axis
to multiply resolution by 4 times
at the cost of reducing the number of frames by 4 times

It was one of my patent pending applications

If you watch deep space images it makes sense
What are the patent application numbers? Which countries?

John
NDA

??? Patent applications are public knowledge, no? At least the fact that they are filed and the meta data.

--

Rick C.

- Get 1,000 miles of free Supercharging
- Tesla referral code - https://ts.la/richard11209

 

[Ricky]

On Saturday, October 29, 2022 at 3:27:05 PM UTC-4, John Walliker wrote:

On Saturday, 29 October 2022 at 18:39:27 UTC+1, a a wrote:
On Saturday, 29 October 2022 at 16:29:20 UTC+2, John Walliker wrote:
On Saturday, 29 October 2022 at 15:21:33 UTC+1, a a wrote:
On Saturday, 29 October 2022 at 07:07:15 UTC+2, Jan Panteltje wrote:
https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?
No need to get CCD vibrated if you can append CCD sensor with 2 vibrating mirrors, one in X-axis, another in Y-axis
to multiply resolution by 4 times
at the cost of reducing the number of frames by 4 times

It was one of my patent pending applications

If you watch deep space images it makes sense
What are the patent application numbers? Which countries?

John
NDA
I find it very hard to believe that you can have any \"pending\" patents at
the moment. If you really were subject to an NDA you would hardly have
told us all about it, breaking your own NDA.
Also, vibrating two mirrors is much more complicated than vibrating one
sensor (which nowadays is unlikely to be a CCD) because the use of mirrors
requires a more convoluted optical path.

He didn\'t say it was a good patent.

--

Rick C.

+ Get 1,000 miles of free Supercharging
+ Tesla referral code - https://ts.la/richard11209

 

[Martin Brown]

On 29/10/2022 15:29, John Walliker wrote:

On Saturday, 29 October 2022 at 15:21:33 UTC+1, a a wrote:
On Saturday, 29 October 2022 at 07:07:15 UTC+2, Jan Panteltje wrote:
https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?
No need to get CCD vibrated if you can append CCD sensor with 2 vibrating mirrors, one in X-axis, another in Y-axis
to multiply resolution by 4 times
at the cost of reducing the number of frames by 4 times

It was one of my patent pending applications

If you watch deep space images it makes sense

What are the patent application numbers? Which countries?

He is talking *COMPLETE UTTER BOLLOCKS* (TM). When does he not?

Single axis tip-tilt compensation won\'t get you anything like what he
claims. The problem is that for anything larger than a 4\" telescope the
phase differences across the scope aperture cannot be compensated
without *deforming* the compensation mirror in the optical path. It is
cheap enough that some keen amateurs had it once, but increasingly they
do it by one of the software based shift and add packages instead.

Lucky seeing is all the rage and requires very little hardware. Amateurs
with 10\" scopes can image planets routinely now at what would have been
at the limits of the worlds major observatories a couple of decades ago.
It has had interesting side effects - near continuous hires imaging of
Jupiter reveals things crash into it more often than we thought!

Wavefront correction systems in astronomy have been almost routine since
the 1990\'s on the bigger telescopes. There are no significant patents
worth even looking at - it is mostly public domain or top secret!

There are companies that make the kit - spin offs of the various
astronomy/electronics departments that made the earliest units.

The classic implementation is a so called rubber mirror in the light
cone that can be deformed slightly up and down by piezo transducers to
null out the seeing. They work very well if you have a guide star.

Increasingly the bigger telescopes create their own guide star by
exciting Na-D emission in the stratosphere with a focused yellow laser.
This isn\'t a bad summary introduction:

https://www.toptica.com/applications/astronomy-geology/laser-guide-star

There are only two main groups interested in doing it:

Astronomers - wanting the sharpest possible ground based images
Military - wanting to better focus their laser death rays.

Neither bother to publish in the open patent literature although you can
find plenty of interesting articles in Proc IEEE or ADS Abstracts. eg.

https://www.aanda.org/articles/aa/abs/2020/04/aa37033-19/aa37033-19.html

--
Regards,
Martin Brown

 

[John Larkin]

On Sun, 30 Oct 2022 06:18:57 GMT, Jan Panteltje
<pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Sat, 29 Oct 2022 11:47:39 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
r7sqlhpppp3n8fhhs5nn9hf16tqddb4vcg@4ax.com>:

On Sat, 29 Oct 2022 17:25:34 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Sat, 29 Oct 2022 07:34:47 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
qrdqlhpor5v5h642dr8ida0lqjodp3gdfk@4ax.com>:

On Sat, 29 Oct 2022 04:59:56 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?

Speaking of retinas...

https://www.dropbox.com/s/z4kym11g2qvlgei/Retina_Repair_2022.jpg?raw=1

We don\'t know exactly why the left eye developed a macular hole; they
do that sometimes.

Look into a laser?

Not even a laser. One looks into a lens and sees some blue rectangles
for a few seconds. LEDs, not lasers.



The good news is that it can be mostly fixed. The guy who did it is a
genius with a very steady hand.

The tomography is amazing. Just a few seconds looking at some blue
lights.

Yes, looks almost better now than the right eye!

It does. The right eye is normal, a little puckered around the macula.
The treatment is for the doc to peel away the top two layers of cells
in a big patch of the retina, which relieves stress and lets the hole
close. Done by hand. With tweezers. It was interesting, a half hour of
wild light show.


What exactly does the blue light do?

Don\'t know. I should look it up, \"Optical coherence tomography of
macular holes.\" The original resolution is much better than what I
posted, which was scanned from a paper report.

Amazing.

Here\'s a really good tomograph.

https://retinaassociatesofgreaterphiladelphia.com/wp-content/uploads/2021/07/STAGE-3-MAC-HOLE-WITH-PSEUDO-OPERCULUM-CROPPED-WITH-
RA.jpg

You can see the vitreus humor pulled back from the retina, and a bit
that it tore away.

https://en.wikipedia.org/wiki/Optical_coherence_tomography

Thank you very much for the links
Always learning!
Very impressive that wikipedia link!

It\'s interesting to think of making a split-beam interferometer with
wideband light. You get good interference over a very short range of
distances, as opposed to periodic interferance over a wide range with
long-coherence light.

I did see a red line sweep top to bottom when they did the scan.

 

[John Larkin]

On Mon, 31 Oct 2022 12:21:16 -0700, John Larkin
<jlarkin@highland_atwork_technology.com> wrote:

On Sun, 30 Oct 2022 06:18:57 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Sat, 29 Oct 2022 11:47:39 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
r7sqlhpppp3n8fhhs5nn9hf16tqddb4vcg@4ax.com>:

On Sat, 29 Oct 2022 17:25:34 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Sat, 29 Oct 2022 07:34:47 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
qrdqlhpor5v5h642dr8ida0lqjodp3gdfk@4ax.com>:

On Sat, 29 Oct 2022 04:59:56 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

https://www.sciencedaily.com/releases/2022/10/221027123919.htm
https://www.rockefeller.edu/news/33135-fruit-flies-move-their-retinas-much-like-humans-move-their-eyes/

Makes me wonder if we will get vibrating camera sensors, maybe using piezos to
move the CCD ?

Speaking of retinas...

https://www.dropbox.com/s/z4kym11g2qvlgei/Retina_Repair_2022.jpg?raw=1

We don\'t know exactly why the left eye developed a macular hole; they
do that sometimes.

Look into a laser?

Not even a laser. One looks into a lens and sees some blue rectangles
for a few seconds. LEDs, not lasers.



The good news is that it can be mostly fixed. The guy who did it is a
genius with a very steady hand.

The tomography is amazing. Just a few seconds looking at some blue
lights.

Yes, looks almost better now than the right eye!

It does. The right eye is normal, a little puckered around the macula.
The treatment is for the doc to peel away the top two layers of cells
in a big patch of the retina, which relieves stress and lets the hole
close. Done by hand. With tweezers. It was interesting, a half hour of
wild light show.


What exactly does the blue light do?

Don\'t know. I should look it up, \"Optical coherence tomography of
macular holes.\" The original resolution is much better than what I
posted, which was scanned from a paper report.

Amazing.

Here\'s a really good tomograph.

https://retinaassociatesofgreaterphiladelphia.com/wp-content/uploads/2021/07/STAGE-3-MAC-HOLE-WITH-PSEUDO-OPERCULUM-CROPPED-WITH-
RA.jpg

You can see the vitreus humor pulled back from the retina, and a bit
that it tore away.

https://en.wikipedia.org/wiki/Optical_coherence_tomography

Thank you very much for the links
Always learning!
Very impressive that wikipedia link!

It\'s interesting to think of making a split-beam interferometer with
wideband light. You get good interference over a very short range of
distances, as opposed to periodic interferance over a wide range with
long-coherence light.

I did see a red line sweep top to bottom when they did the scan.

I guess that a femtosecond monochromatic pulse would have the same
effect, wideband optical spectrum and good distance resolution, but an
incoherent red LED is a lot cheaper.