I have a 13 year old 1/2 black lab-/1/2 chow.
Over the last two years , he has developed a strong green glow in his
entire eye area and it is becomming very dominent, when any type of
light(even mild light coming from a window) hits his eyes.
He sees just fine, but we were wondering why this change. Its just
not the regular night vision green, but sort of the entire thing is green at
certain angles. Its hard to explain.
He goes to vet every six months for checkups, but we really didnt
understand the vets explanation, saying its normal aging.
Much regards

J.Lef wrote:
I have a 13 year old 1/2 black lab-/1/2 chow.
Over the last two years , he has developed a strong green glow in his
entire eye area and it is becomming very dominent, when any type of
light(even mild light coming from a window) hits his eyes.
He sees just fine, but we were wondering why this change. Its just
not the regular night vision green, but sort of the entire thing is green at
certain angles. Its hard to explain.
He goes to vet every six months for checkups, but we really didnt
understand the vets explanation, saying its normal aging.
Much regards

http://old.cvm.msu.edu/courses/AP/cataract/vocab/tapref.htm

http://books.google.com/books?id=tH0-hxq_bgUC&pg=PA153&lpg=PA153&dq=tapetal+reflection& source=bl&ots=durweEL2d3&sig=VXQuUP5JOm23oDQ6gGCLy rRWV7U

Dogs and cats have a special reflective layer in the back of the eye
termed the tapetum. Incoming light passes through the animal's retina
and is then reflected back through the retina a second time from the
tapetal layer. This double stimulation helps these animals to see better
in dim light. The color of this tapetal layer varies to some extent with
an animal's coat color. A black retriever, for example, will usually
have a green tapetal reflection. A buff cocker spaniel will generally
show a yellow tapetal reflection. Most young puppies and kittens have a
blue tapetal reflection until the structures in the back of the eye
fully mature at six to eight months old. "Color dilute" dogs and cats,
such as red Siberian huskies and blue point Siamese cats, may have no
tapetal pigment and may therefore exhibit a red reflex just like human
beings.

In article ,
J.Lef wrote:
He goes to vet every six months for checkups, but we really didnt
understand the vets explanation, saying its normal aging.

Right - it's normal for the vitreous humor to cloud as the
dog ages, and my understanding is that it doesn't affect
vision. It's not a cataract.

I once took in a rescue I'd been told was 4 or 5 but within
a few years his eyes started to cloud, and when he had an
x-ray done to look for the cause of some problems he was
having with his movement it turned out that he was actually
5 years older than I'd been told. The first clue was the
eyes.
--
Melinda Shore - Software longa, hardware brevis -

Prouder than ever to be a member of the reality-based community

"J.Lef" spoke these words of wisdom in
:

I have a 13 year old 1/2 black lab-/1/2 chow.
Over the last two years , he has developed a strong green glow in
his
entire eye area and it is becomming very dominent, when any type of
light(even mild light coming from a window) hits his eyes.
He sees just fine, but we were wondering why this change. Its
just
not the regular night vision green, but sort of the entire thing is
green at certain angles. Its hard to explain.
He goes to vet every six months for checkups, but we really didnt
understand the vets explanation, saying its normal aging.
Much regards




Shedding cells within the eye collect and do not drain out. Thus you get a
cloudy collection of cells within the eye which reflect that greenish cat.
That said, I CERF my dogs every year just to be sure. Cerf only lasts a
year, but I cerf every two years under 9 (I cerf at age 1, 3, 5, 7, 9,
10,11, 12,-), and then cerf every year over 9.
Cerf is an eye test done by a Veterinary opthamologist.

It sounds like old dog eyes to me. An opthamologist does tests that your
regular veterinarian doesn't do. Which is why I cerf. Cerf testing is not
expensive.

diddy none wrote:

It sounds like old dog eyes to me.

Yes - if it's bilateral (affecting both eyes) and symmetrical,
it's most likely "old dog eyes", technically known as nuclear
or lenticular sclerosis. It's harmless and does not interfere
with vision; mostly it's just a saddening reminder that our
friends are getting older :-(.

Some photos of nuclear sclerosis:

http://en.wikipedia.org/wiki/Nuclear_sclerosis
http://www.petplace.com/dogs/lenticu...ogs/page1.aspx
http://www.animaleyecare.net/disease...ct.htm#whatnot
http://veterinarynews.dvm360.com/dvm....jsp?id=201597
(specifically written for vets)

Hope that helps,

Dianne

(null) wrote:
diddy none wrote:

It sounds like old dog eyes to me.


Yes - if it's bilateral (affecting both eyes) and symmetrical,
it's most likely "old dog eyes", technically known as nuclear
or lenticular sclerosis. It's harmless and does not interfere
with vision; mostly it's just a saddening reminder that our
friends are getting older :-(.

Yep. Here's my holiday photo before I retouched it. This was done with
professional lighting and I included Zipper so you could see that his
eyes had no reflection at all. Because Viva is 11 and has lenticular
sclerosis, her eyes reflected much more. And you can clearly see
tapetum; her vision is fine. It's one of the few ways you can tell she's
getting older.

http://www.totaldobe.com/images/viva/vivaoldeyes.jpg

And by the way, because dog tapetum is green, not red, Photoshop's red
eye fix doesn't work. I did a rather sloppy job in this one because I
was doing it only for web view:

http://www.totaldobe.com/images/viva/vivaredeyefix.jpg

The key is sampling the black from the pixels around the eye, not using
dead black. Use a soft edged brush and be sure to put some sort of
highlight back in. The highlight I put in on her left eye is too sharp
but in the final picture which is much smaller it looks fine:

http://www.robinnuttall.com/images/holiday2008_web.jpg

Robin Nuttall wrote:



And by the way, because dog tapetum is green, not red, Photoshop's red
eye fix doesn't work. I did a rather sloppy job in this one because I
was doing it only for web view:

http://www.totaldobe.com/images/viva/vivaredeyefix.jpg

I've seen gold, green, blue-green and red reflections from dogs' tapetums.

http://www.kodakgallery.com/ShareLan...localeid=en_US

-or-

http://tinyurl.com/dogeyes

Kathleen wrote:

I've seen gold, green, blue-green and red reflections from dogs' tapetums.

Oh, well, if we're going to chat about tapetums... *g*

My little Old English Sheepdog, Chloe (RIP) was a rescue
of unknown parentage, but I took her in for a routine CERF
exam once anyway (why not?) The opthalmologist examined
her for the longest time and then sat back with the biggest
grin on his face. "She's very interesting," he announced.

Turned out she had almost no tapetum in her right eye.
I asked if it was a hereditary thing, and he said that
there was no way of telling short of breeding her. Since
she'd been spayed many years before, the question would
forever remain a mystery.

In case anyone is wondering, tapetum is pronounced
tap-EE-tum, not TAPE-tum.

And here are some more pictures of glowing tapetums:

http://en.wikipedia.org/wiki/Tapetum_lucidum

Dianne

(null) wrote:

Kathleen wrote:

I've seen gold, green, blue-green and red reflections from dogs' tapetums.


Oh, well, if we're going to chat about tapetums... *g*

My little Old English Sheepdog, Chloe (RIP) was a rescue
of unknown parentage, but I took her in for a routine CERF
exam once anyway (why not?) The opthalmologist examined
her for the longest time and then sat back with the biggest
grin on his face. "She's very interesting," he announced.

Turned out she had almost no tapetum in her right eye.
I asked if it was a hereditary thing, and he said that
there was no way of telling short of breeding her. Since
she'd been spayed many years before, the question would
forever remain a mystery.

In case anyone is wondering, tapetum is pronounced
tap-EE-tum, not TAPE-tum.

And here are some more pictures of glowing tapetums:

http://en.wikipedia.org/wiki/Tapetum_lucidum

The reason for the series of photos posted above was that our BC,
Scully, was discovered to be lacking the tapetum in her right eye.

Kathleen wrote:

The reason for the series of photos posted above was that our BC,
Scully, was discovered to be lacking the tapetum in her right eye.

LOL.... d'ya suppose they were related??

Prolly not :-).

Dianne