R
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livejournal said:
That is one pissed off looking bird.
That first picture..spooky.. *shiver*
Glad they rescued it though
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That is one pissed off looking bird.
That first picture..spooky.. *shiver*
Glad they rescued it though
P
Philosopher B.
Heh, that fourth pic just cracks me up. He looks so mad.
I see what you did there.
L
lafftaff
I never realized how big an owl's eyes really are. They're super pretty.
S
SeraRelm
L
Laurelai
/paramedic on
I'm worried about the bird because it's pupils are not equal. They should accommodate- i.e. if one is exposed to light, the other should constrict to match it's partner. That could be a sign of a head injury.
I'm worried about the bird because it's pupils are not equal. They should accommodate- i.e. if one is exposed to light, the other should constrict to match it's partner. That could be a sign of a head injury.
Ross
Staff member
It only seems that way because of how the shading is when in the box, I think. His eyes seem pretty equal in the other pics.[/quote]/paramedic on
I'm worried about the bird because it's pupils are not equal. They should accommodate- i.e. if one is exposed to light, the other should constrict to match it's partner. That could be a sign of a head injury.
This.
Also
FIRST I LOL'D
THEN I SERIOUS'D
and let's not forget
YA RLY, NOW GTFO
Really? I thought you could preserve night vision by covering one eye when passing bright spots. I'll have to put sunglasses on one eye tonight and see if the pupils are the same size or not./paramedic on
I'm worried about the bird because it's pupils are not equal. They should accommodate- i.e. if one is exposed to light, the other should constrict to match it's partner. That could be a sign of a head injury.
-Adam
L
Laurelai
Really? I thought you could preserve night vision by covering one eye when passing bright spots. I'll have to put sunglasses on one eye tonight and see if the pupils are the same size or not./paramedic on
I'm worried about the bird because it's pupils are not equal. They should accommodate- i.e. if one is exposed to light, the other should constrict to match it's partner. That could be a sign of a head injury.
-Adam[/QUOTE]
When you shine a light in one pupil, the other should constrict as well- it's hard to test on yourself lol. Grab a friend though!
---------- Post added at 02:31 AM ---------- Previous post was at 02:28 AM ----------
..... of course, that's with humans. I will readily admit that my avian medic skills are a tad lacking!
Really? I thought you could preserve night vision by covering one eye when passing bright spots. I'll have to put sunglasses on one eye tonight and see if the pupils are the same size or not./paramedic on
I'm worried about the bird because it's pupils are not equal. They should accommodate- i.e. if one is exposed to light, the other should constrict to match it's partner. That could be a sign of a head injury.
-Adam[/quote]
When you shine a light in one pupil, the other should constrict as well- it's hard to test on yourself lol. Grab a friend though!
---------- Post added at 02:31 AM ---------- Previous post was at 02:28 AM ----------
..... of course, that's with humans. I will readily admit that my avian medic skills are a tad lacking![/QUOTE]
Hot dog, you're right!
-Adam
Really? I thought you could preserve night vision by covering one eye when passing bright spots. I'll have to put sunglasses on one eye tonight and see if the pupils are the same size or not./paramedic on
I'm worried about the bird because it's pupils are not equal. They should accommodate- i.e. if one is exposed to light, the other should constrict to match it's partner. That could be a sign of a head injury.
-Adam[/quote]
When you shine a light in one pupil, the other should constrict as well- it's hard to test on yourself lol. Grab a friend though!
---------- Post added at 02:31 AM ---------- Previous post was at 02:28 AM ----------
..... of course, that's with humans. I will readily admit that my avian medic skills are a tad lacking![/QUOTE]
Hot dog, you're right!
-Adam[/QUOTE]
no worries, folks -- this can be quite a normal finding in birds. for one thing, there is 100% crossover at the optic chiasm, so no consensual PLR is expected (in most avian species). also, birds have striated muscle controlling the pupillary sphincter (and thus can voluntarily constrict their pupils - how cool is that?). that's not to say that this owl *doesn't* have an ocular/neurologic injury affecting one or both eyes, but the anisocoria is not automatically a sign of pathology (especially since the pupils look pretty even in the last picture).
tl;dr or "holy crap medical gobbledygook" version: pupil size weirdness does not necessarily equal badness.
and he does look rather miffed in that last picture -- maybe he's mad that you didn't let him drive.
L
Laurelai
Really? I thought you could preserve night vision by covering one eye when passing bright spots. I'll have to put sunglasses on one eye tonight and see if the pupils are the same size or not./paramedic on
I'm worried about the bird because it's pupils are not equal. They should accommodate- i.e. if one is exposed to light, the other should constrict to match it's partner. That could be a sign of a head injury.
-Adam[/quote]
When you shine a light in one pupil, the other should constrict as well- it's hard to test on yourself lol. Grab a friend though!
---------- Post added at 02:31 AM ---------- Previous post was at 02:28 AM ----------
..... of course, that's with humans. I will readily admit that my avian medic skills are a tad lacking![/QUOTE]
Hot dog, you're right!
-Adam[/QUOTE]
no worries, folks -- this can be quite a normal finding in birds. for one thing, there is 100% crossover at the optic chiasm, so no consensual PLR is expected (in most avian species). also, birds have striated muscle controlling the pupillary sphincter (and thus can voluntarily constrict their pupils - how cool is that?). that's not to say that this owl *doesn't* have an ocular injury in one or both eyes, but the anisocoria is not automatically a sign of pathology (especially since the pupils look pretty even in the last picture).
tl;dr or "holy crap medical gobbledygook" version: pupil size weirdness does not necessarily equal badness.
and he does look rather miffed in that last picture -- maybe he's mad that you didn't let him drive.[/QUOTE]
...... I thinks I'm in lub!
Really? I thought you could preserve night vision by covering one eye when passing bright spots. I'll have to put sunglasses on one eye tonight and see if the pupils are the same size or not./paramedic on
I'm worried about the bird because it's pupils are not equal. They should accommodate- i.e. if one is exposed to light, the other should constrict to match it's partner. That could be a sign of a head injury.
-Adam[/quote]
When you shine a light in one pupil, the other should constrict as well- it's hard to test on yourself lol. Grab a friend though!
---------- Post added at 02:31 AM ---------- Previous post was at 02:28 AM ----------
..... of course, that's with humans. I will readily admit that my avian medic skills are a tad lacking![/quote]
Hot dog, you're right!
-Adam[/quote]
no worries, folks -- this can be quite a normal finding in birds. for one thing, there is 100% crossover at the optic chiasm, so no consensual PLR is expected (in most avian species). also, birds have striated muscle controlling the pupillary sphincter (and thus can voluntarily constrict their pupils - how cool is that?). that's not to say that this owl *doesn't* have an ocular injury in one or both eyes, but the anisocoria is not automatically a sign of pathology (especially since the pupils look pretty even in the last picture).
tl;dr or "holy crap medical gobbledygook" version: pupil size weirdness does not necessarily equal badness.
and he does look rather miffed in that last picture -- maybe he's mad that you didn't let him drive.[/QUOTE]
Cool! Another random set of info I can store in my noggin.
The picture with the two pupils sized differently reminds me of a human cocking one eyebrow at you.
Anthropomorphizing ftw!
-Adam
P
Philosopher B.
He's such an angry little guy, every time I look at the pics, I just get the urge to hug him. 'Course, he'd probably rip my face off. "P
figmentPez
Staff member
Yes, you can preserve night vision by covering one eye when in bright light. However, it's not a matter of pupil size, it's about chemicals called rhodopsins. A probably over-simplified explanation, in the light sensitive cones of the eye (which are responsible for night vision, and only see in black & white) light hits rhodopsin and splits it into retinol and opsin. In bright light all the available rhodopsin gets split and it takes time for it to bind back together. (The more rhodopsin you have, the better night vision you have, thus eating lots of carrots which provide Vitamin A, retinol, does improve night vision).
Yes, you can preserve night vision by covering one eye when in bright light. However, it's not a matter of pupil size, it's about chemicals called rhodopsins. A probably over-simplified explanation, in the light sensitive cones of the eye (which are responsible for night vision, and only see in black & white) light hits rhodopsin and splits it into retinol and opsin. In bright light all the available rhodopsin gets split and it takes time for it to bind back together. (The more rhodopsin you have, the better night vision you have, thus eating lots of carrots which provide Vitamin A, retinol, does improve night vision).[/QUOTE]
Ah, that makes sense! I always wondered why night vision returned slowly, when the pupils react pretty quickly. I just figured there was a huge low pass filter somewhere - and now I know it's called rhodopsins.
-Adam
aww
in honor of this thread, it seems appropriate to revert to my default icon. it's an osprey! (one of my former patients.)
I think you mean rods. Cones are for color, I'm pretty sure.
Or at least, that's what Blue Man Group taught me.
figmentPez
Staff member
Yes, you're right. I've never been able to keep those straight. Even to the point of not being able to type/say the one I'm thinking of. Although I probably wasn't even thinking the right word this time. I need to come up with some sort of mnemonic.
Yes, you're right. I've never been able to keep those straight. Even to the point of not being able to type/say the one I'm thinking of. Although I probably wasn't even thinking the right word this time. I need to come up with some sort of mnemonic.[/QUOTE]
Cone = Color is how I got it.
figmentPez
Staff member
Yeah, I noticed that I was typing. I figured I deserved to have the obvious pointed out to me anyway.
North_Ranger
Staff member
Awww, so many things that I want to say...
- These pictures need captions, like NAU
- So they finally caught Bubble for multiple avicide?
- Awww, I think we just got a new forum pet.
- These pictures need captions, like NAU
- So they finally caught Bubble for multiple avicide?
- Awww, I think we just got a new forum pet.
Yeah, I noticed that I was typing. I figured I deserved to have the obvious pointed out to me anyway.[/QUOTE]
It's cool. I see from your avatar that you're chromatically challenged. I don't judge.
makes a good avatarAwww, so many things that I want to say...
- These pictures need captions, like NAU
- So they finally caught Bubble for multiple avicide?
- Awww, I think we just got a new forum pet.
North_Ranger
Staff member
makes a good avatar[/QUOTE]Awww, so many things that I want to say...
- These pictures need captions, like NAU
- So they finally caught Bubble for multiple avicide?
- Awww, I think we just got a new forum pet.
YES! I declare an OAW (=Owl Avatar Week!)
it's like a who's who of avatarsYES! I declare an OAW (=Owl Avatar Week!)
it's like a who's who of avatars[/QUOTE]YES! I declare an OAW (=Owl Avatar Week!)
It - Noun
Something I can dig.
figmentPez
Staff member
Okay, I've got my owl avatar!YES! I declare an OAW (=Owl Avatar Week!)
what, no love for the other birds of prey? ::sits sadly in the corner with the angry osprey::YES! I declare an OAW (=Owl Avatar Week!)
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