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An ophthalmoscopic view of the retina showing advanced signs of diabetic retinopathy including two pale cotton wool spots. Cotton wool spots are opaque fluffy white patches on the retina of the eye that are considered an abnormal finding during a funduscopic exam (also called an ophthalmoscopic exam). [1]
Cat senses are adaptations that allow cats to be highly efficient predators. Cats are good at detecting movement in low light, have an acute sense of hearing and smell, and their sense of touch is enhanced by long whiskers that protrude from their heads and bodies. These senses evolved to allow cats to hunt effectively at dawn and dusk.
Moreover, when the temporal frequency of luminance modulation in the surrounding patches exceeded a threshold value, the induced response disappeared, suggesting that it was the result of a spreading of activity, taking a finite time to happen, likely explainable in the context of isomorphic filling-in.
The cat's owner, Bella, told another commenter, "I swear he thinks it works. Bless his heart! It's unclear how long he's been a tripod cat , but if this is a newer amputation, it makes sense that ...
Perhaps the Cheshire Cat is one of the most famous cats in world culture, but for each of us, the most important kitty is the one that lives with us, rubs against our legs, and brazenly demands ...
Photographing street cats also demands a sharp eye for detail, quick reflexes, and an understanding of their natural behaviors. My experience with red squirrels may have honed me the ability to ...
This is notable in horses, cows, cats, dogs, the urban crow [7] and the ball python [8] but is also found in many other species. Due to the lack of melanin production in both the retinal pigmented epithelium (RPE) and iris , those affected by albinism sometimes have pink pupil due to the underlying blood vessels showing through.
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.