Author Topic: Microphthalmia - small/under developed eye- any experience?  (Read 9259 times)

Offline snarf

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Re: Microphthalmia - small/under developed eye- any experience?
« Reply #12 on: June 02, 2011, 19:41:38 PM »
ill try to access the papers. have a few friends still at uni  :sneaky:


If the kitten is sightless in that eye could the vet stitch the eyelid closed? I understand that is what is done in certain eye conditions in order to prevent infection in the socket, keep the animal comfortable and reduce workload for volunteers and adopters (e.g. administering artificial tears). If I were considering adopting I'd want to know what the risks of infection are and how much an operation may cost, bearing in mind this is not an insurable condition.


they havent mentioned infection to me so i dont think its any more likely than a normal cat as long as the third eyelid is kept healthy. the eye over lubricates and it pools in the extra space in the front of the socket so i dont think stitching shut is an option. im not sure im explaining this very well :-: his other eye has ruptured at some point in the past so totally sightless in that eye but the small eye closes when the flash goes on the camera so i think he has some sight in the little eye but he may not, and its certainly not much. We have an adopter lined up already for this lad who is fully aware of his problems (hes a likely flu carrier) and she is fine with the daily cleaning of the eye but the priority is his comfort, but given the possibility of some sight we dont want to overreact. she is talking to her vet with photos, my coordinator is talking to our vets again. would just be nice if we came across someone with similar experiences  :sneaky:

that was indeed what i was getting at but you make alot of sense, it would have been lovely if it had been a possibility

Offline Fire Fox

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Re: Microphthalmia - small/under developed eye- any experience?
« Reply #11 on: June 02, 2011, 18:30:19 PM »
Thanks Firefox thats really interesting, so the small eyes can be caused by flu type bugs? is that how you read that too? if its rare in cats but not in kittens do you think that may mean they can catch up in size? i think his sights gone forever but if the eye were to grow a little it would make the third eyelid more comfortable

Amanda, im in nottinghamshire

I read it simply as the condition is rare and thus has not been studied properly - the word hypothesized speaks volumes - which would fit in with your vets giving you conflicting information. :shy: One reference saying it's rare in cats and another saying not in kittens could mean opinions vary, or could mean many kittens are PTS - I would think this is more likely in a pedigree breeding programme?  :'( If you could get access to the rest of that letter and the references that might be enlightening, the references could be a few lines in a textbook or could be published research papers.

If the kitten is sightless in that eye could the vet stitch the eyelid closed? I understand that is what is done in certain eye conditions in order to prevent infection in the socket, keep the animal comfortable and reduce workload for volunteers and adopters (e.g. administering artificial tears). If I were considering adopting I'd want to know what the risks of infection are and how much an operation may cost, bearing in mind this is not an insurable condition.

I think what you are getting at is that this eye condition might be arrested development, rather than halted development or erroneous development? My gut instinct is this eye won't ever catch up as that would mean it would have to grow at a faster rate than the other eye, when both eyes should be subject to the same hormonal signals. Plus 'defects' that occur in the womb don't generally spontaneously resolve whatever the cause, as the genes that control certain aspects of development switch off once the embryo is (or should be) fully formed.
:'( My beautiful Noah rescued 13/02/09, adopted 11/10/09, taken 11/02/11 :'( You deserved so much more.
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Offline snarf

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Re: Microphthalmia - small/under developed eye- any experience?
« Reply #10 on: June 02, 2011, 15:49:19 PM »
I think the problem with approaching specialists is that his sight is very unlikely to be improved- Both eyes are blue and cloudy. our vet has said that the only further treatment option is removal if the eye bothered him. i dont think it does bother him  currently and it would be a shame if the eye was removed when it may improve or certainly not worsen. i think the current view is that if he cant see it may as well be removed better to be safe etc. Just looking for a bit of background info to better understand.

Offline Amanda (mad4moggies)

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Re: Microphthalmia - small/under developed eye- any experience?
« Reply #9 on: June 02, 2011, 14:57:31 PM »
Do you think it would be worth consulting an opthalmic specialist? Your vet could take some photos of his eye and email it to an eye specialist for their opinion?

Just an idea. It might give you further information which you can pass on to potential new owners.

Offline snarf

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Re: Microphthalmia - small/under developed eye- any experience?
« Reply #8 on: June 02, 2011, 13:56:58 PM »
Thanks Firefox thats really interesting, so the small eyes can be caused by flu type bugs? is that how you read that too? if its rare in cats but not in kittens do you think that may mean they can catch up in size? i think his sights gone forever but if the eye were to grow a little it would make the third eyelid more comfortable

Amanda, im in nottinghamshire

Offline Amanda (mad4moggies)

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Re: Microphthalmia - small/under developed eye- any experience?
« Reply #7 on: June 02, 2011, 10:56:08 AM »
Snarf, where abouts are you based?

Offline Fire Fox

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Re: Microphthalmia - small/under developed eye- any experience?
« Reply #6 on: June 02, 2011, 00:29:52 AM »
I just Google Scholar'd and Google Books'd, darn eternal student-ism.  :-[ Came across the following exerpt from (presumably a letter in) the New Zealand Veterinary Journal, 1981!! Two links because I amalgamated two sources to get the following quotation, the full text is paid for and I doubt it will be worthwhile as any responses will be in a later edition. The letter is also listed on Pubmed so possibly accessible to vet staff.
"Sir, — The congenital abnormality of microphthalmia has been variously described as rare in cats (1) and not rare in kittens (2). Having recently come across this condition for the first time in 14 years of small animal practice, I am interested to discover how prevalent it is in New Zealand. In the case in question the abnormality occurred in two kittens in the same litter. The queen is a blue-cream Persian aged 3 years, and her two previous litters were normal…."
http://www.ingentaconnect.com/content/tandf/nzvj/1981/00000029/00000003/art00010
http://www.informaworld.com/smpp/content~db=all~content=a933954460

From 2010
"Dr Clair discussed with the owners that it was most likely Daisy had been born to an un-vaccinated "queen" or mother cat and thus had not benefitted from any maternal antibodies passed across the placenta before birth or after being born through mom's milk via nursing. Without maternal antibodies, most puppies and kittens are at greatest risk to disease and Dr Clair hypothesized Daisy had contracted a severe upper respiratory infection as a young kitten that had permanently damaged both eyes, resulting in microphthalmia, or very small eyes."
http://www.youtube.com/watch?v=mqG8GSgqggg

It occurs to me perhaps there is no one cause - some cases may be a genetic fault in the breeding line, some may be spontaneous genetic mutation, some a problem during development. A lot of research into health conditions is funded by those with a vested interest in prevention, treatment or cure. Science is not yet at the point it can grow a new eye, therefore there is no money to be made.
:'( My beautiful Noah rescued 13/02/09, adopted 11/10/09, taken 11/02/11 :'( You deserved so much more.
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Offline Tiggy's Mum

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Re: Microphthalmia - small/under developed eye- any experience?
« Reply #5 on: June 01, 2011, 22:06:05 PM »
I just did a search on Purrs in case someone had experience in the past but nope, you're the only person ever to have mentioned that word!

I wonder if it's worth trying to get in contact with an eye specialist at one of the university veterinary centres to see if they can advise on the condition in general and how it might affect him in the future?  :hug:

Offline snarf

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Re: Microphthalmia - small/under developed eye- any experience?
« Reply #4 on: June 01, 2011, 15:56:44 PM »
Microphthalmia is the term i was thinking of. looking around on it though theres not much more than a mention on the internet apart from messybeast which seems to have much closer to normal eyes than the foster...

So anyone with any experience?

Offline snarf

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Re: technical name for small/non developed eye
« Reply #3 on: May 31, 2011, 22:21:56 PM »
Thanks Helen, i came across the same link too but unfortunately no, his problem with the third eyelid is caused by the size/position of the eye not a symptom in itself. now its being bathed twice a day its now a nice healthy third eyelid. i think the small eye is a birth defect but i cant fully remember. the way the vet has explained it to me is that it causes the natural lubrication in the eye (which is over producing as the third eyelid is out) to collect in the well formed by the eye not filling the socket and this is uncomfortable if it collects to much or is allowed to fester so needs gently teasing out. this is all fine but either my explanation or the vets seems to have given my coordinator the impression that the eye is infected and being able to point her to some text on it would aid greatly. she hasnt seen him so it is harder to see what is meant but its potentially holding up adoption now.

Offline Tiggy's Mum

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Re: technical name for small/non developed eye
« Reply #2 on: May 31, 2011, 20:30:34 PM »
I've heard of 'third eyelid syndrome' aka torovirus but don't think that fits the bill? Just googled third eyelid syndrome and this was one of the links... Any sound similar?

http://www.medicinenet.com/pets/cat-health/third_eyelids_problems_in_cats.htm

Offline snarf

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Microphthalmia - small/under developed eye- any experience?
« Reply #1 on: May 31, 2011, 18:03:56 PM »
Im fostering a kitten that is almost totally (if not totally) blind, one eye is ruptured and healed the other may have ruptured but is certainly too small or recessed which is causing the third eyelid to be constantly exposed. ive heard of this before (on purrs i think) so i think it may be a condition? trying to Google for more info for my coordinators and potential adoptees. Rupture/blindness may be due to flu but were getting confusing or conflicting info from the vets who seem to feel that as were a group, not an owner we dont really need to know whats caused the blindness  :tired: . His eyes both look blue if that helps, hes 6months-1 year old
« Last Edit: June 01, 2011, 15:53:42 PM by snarf »

 


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