Threaded Mode | Linear Mode

Kirstie · 24-02-2012, 08:32 PM

Well better news today we finally got some answers on rosies eyes, apparently the she needs tinted lenses as the things called cones in her eyes that reflect the light don't work, and the rods that work in the dark do work But the vet not sure if they can get them as they have only ever seen 1case and they weren't able to get any, so I have to ring back next week to speak to a vet who is away at the moment to check if or where we can find some Bless her! Its a start anyway &just hope they can find any to suit her on the plus side for now we have invested in a glow in the dark ball so @ the moment we can have our playtime @ night ha ha. I will keep you posted with the next stage of our adventure.

Kirstie · 24-02-2012, 09:34 PM

I have just been looking into things on google and I think the condition is called '' Achromatopsia (Cone degeneration)"

Home>Dogs>Dog Diseases Achromatopsia
Cone Degeneration, Achromatopsia
Achromatosis relates to a deficiency of pigmentation in the tissues or lack of staining power in a cell or tissue. 2

Segregation of the domestic dog population into separate breeds, driven by artificial selection for defined phenotypic and behavioral traits, has been marked by the emergence of inherited canine diseases that are often directly comparable to those observed in humans. In humans, a condition referred to as achromatopsia, total color blindness, day-blindness or rod monochromacy has been extensively described. 4

Cones are light-sensitive structures in the vertebrate eye. They are found throughout retina and are concerned with discrimination of color and visual acuity. There are three types of cone cells each containing a different iodopsin and each giving maximum response when stimulated by the blue, green and red. A pigment defect in one or more of the types of cone cells can lead to color blindness.

Breeds Affected by Achromatopsia
Cone degeneration (CD) is an autosomal recessive canine disease that occurs naturally in the Alaskan Malamute , Miniature Poodle and German Shorthaired Pointer breeds, although this condition may exist in other breeds of dogs 3. Canine cone degeneration (CD) was first observed in an inbred strain of Alaskan Malamute dogs in 1960, and is inherited as an autosomal recessive trait.

Signs of Cone degeneration
Cone-degenerate pups develop day-blindness and photophobia between 8 and 12 weeks postnatal, the age when retinal development is normally completed in dogs. Symptoms are present only in bright light; vision in dim light is normal. Affected dogs remain normal throughout life. It is similar to human achromatopsia, a heterogeneous autosomal recessive disorder (caused by more than one factor). Both the canine disease and its human counterparts are characterized by day-blindness and absence of retinal cone function in adults 2. You will know that your dog has day-blindness when you notice him colliding with obstacles in daylight.

**MeAndMyLabs** · 24-02-2012, 09:42 PM

Wow...that's interesting.

Hopefully they'll be able to find what they need to help Rosie out, sending continued good thoughts to you all. Best of luck!

View Andy's Profile · 25-02-2012, 10:04 AM

At least now you know the reason for her day blindness, and why she is fine indoors and at night.
Hope they can get hold of the lenses she needs to help her in the day.

Kirstie · 25-02-2012, 03:32 PM

Thanx for replies yep hopefully we can get summat sorted

Kirstie · 17-05-2012, 05:56 PM

Hi it's been a while since my last update, well Rosie has had her eyes measured for tinted lenses she has a condition called hemeralopia which is similar symptoms to the other condition I thought it was and apparently after speaking to our breeder some of her litter also have it too. She has an appointment to have her lenses fitted nx Thursday so hopefully she can start to have a normal life during the day as @ the moment rosies outside playtime is nighttime where she runs around the garden with her ball like a mad women ha. Another concern of mine with Rosie is that she hasnt come into season yet she will be 1 on 6th June &i would have thought she would have had it by now. My friend has a black lab and hers is about 9months old and she came into season about 2weeks ago. Is this something I should be concerned about &getting checked out?
Thanx kirstie

**MeAndMyLabs** · 17-05-2012, 10:21 PM

I wouldn't worry about her not coming into season yet. I've had friends who have had bitches come in at almost two years of age...just depends on her lines and other factors.

Kirstie · 18-05-2012, 09:37 AM

Ok thanx

Kirstie · 24-05-2012, 01:16 PM

Well Rosie had 1 tinted lens fitted today & every so often we will alternate the lens to the other eye, hopefully she keeps it in n doesn't lose it but so far so good she is able to roam around now without bumping into anything in the garden, her brother has also had his fitted too I believe so hopefully my details will get passed on to his owners & we can see how they both get on ;-))

**MeAndMyLabs** · 24-05-2012, 10:18 PM

That's great to hear! Smile