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The least common type of glaucoma in dogs is primary open-angle glaucoma (POAG), although this is the most common type that affects humans. [1] In the Beagle, POAG is an inherited autosomal recessive trait. [2] Secondary glaucomas occur when other eye diseases alter the flow of aqueous humor either into or out of the eye.
Progressive retinal atrophy (PRA) is a group of genetic diseases seen in certain breeds of dogs and, more rarely, cats. Similar to retinitis pigmentosa in humans, [1] it is characterized by the bilateral degeneration of the retina, causing progressive vision loss culminating in blindness.
Dogs, on the other hand, only have two types of cones in their eyes, allowing them to detect blue and yellow, VCA Animal Hospitals reports. A dog's limited color perception is classified as ...
Sudden acquired retinal degeneration syndrome (SARDS) is a disease in dogs causing sudden blindness. It can occur in any breed, but female dogs may be predisposed. [1] Approximately 4000 cases are seen in the United States annually. [2]
Cherry eye is a disorder of the nictitating membrane (NM), also called the third eyelid, present in the eyes of dogs and cats. [1] Cherry eye is most often seen in young dogs under the age of two. [2] Common misnomers include adenitis, hyperplasia, adenoma of the gland of the third eyelid; however, cherry eye is not caused by hyperplasia ...
In glaucoma, cupped optic discs are seen. In patients with diabetes mellitus, regular ophthalmoscopic eye examinations (once every 6 months to 1 year) are important to screen for diabetic retinopathy, as visual loss due to diabetes can be prevented by retinal laser treatment if retinopathy is spotted early.
Collie eye anomaly (CEA) is a congenital, inherited, bilateral eye disease of dogs, which affects the retina, choroid, and sclera. It can be a mild disease or cause blindness. It can be a mild disease or cause blindness.
The red reflex (also called the fundal reflex) refers to the reddish-orange reflection of light from the back of the eye, or fundus, observed when using an ophthalmoscope or retinoscope. The red reflex may be absent or poorly visible in people with dark eyes, and may appear yellow in Asians or green/blue in Africans. [1]