![]() ![]() If your pet is not improving, and/or there is development of additional clinical signs, contact your veterinarian.Administer any prescribed medication as directed by your veterinarian.Eyedrops, scopolamine skin patches and some other medicines. Some of the most common causes include: Migraine headaches. WholeHearted Grain Free Skin and Coat Care Pea and Salmon Recipe Dry Dog Food, 25 lbs. Anisocoria can be caused by a lot of conditions in your body, injuries, traumas and even some medicines. However, just as we say that in humans the eyes are the windows to the soul, in cats they’re often a window into their health status. Antibiotics and/or anti-inflammatory drugs may be recommended for certain bacterial or inflammatory disorders. From their almond-shaped pupils to the intense iris coloration, they are truly remarkable.No treatment may be needed in disorders such as iris atrophy or hypoplasia, in which the iris is underdeveloped or decreased in size.Iris atrophy in a Yorkshire terrier has resulted in mydriasis and an incomplete pupillary light reflex. The pupil margin may have an irregular or scalloped appearance or an irregular pupil shape, referred to as dyscoria (Figure 3). Your veterinarian may recommend several treatments while results regarding an underlying disorder are pending. This response is common in small dogs, especially poodles. It is difficult to treat dogs with anisocoria symptomatically, as there can be multiple underlying causes that are treated in very specific ways. Computed tomography scan (CT) or magnetic resonance imaging (MRI). ![]() Visual evoked potential (VEP) to evaluate optic nerve and brain function.Electroretinography (ERG) to evaluate retina function.Ultrasound of the eye and the tissues behind the eye.The changes in the standard pupil shape will result in various levels of light sensitivity or lack thereof. Merle dogs can have starburst pupils in one or both eyes. In this case, the edges of the pupils are blurry, irregular, and spiked or jagged. Tonometry to measure intraocular eye pressure Typically, the edges of the pupil are round and well-defined.A change in the shape or position of the eye opening.Medications that change the function of the pupilĪnisocoria can be associated with multiple disease processes, and may be just the initial sign of severe or even life-threatening illness.Glaucoma (increased pressure in the eye).Irregularity of pupil shape with an imperfect response. Anterior uveitis (inflammation of a portion of the eye) and non-infectious causes and, in contrast to uveitis in the dog.Disorders of the optic tract, a bundle of nerve fibers associated with the eye.Disease of the cerebellum, a portion of the brain.Disorders of the oculomotor nerve, a cranial nerve that provides muscle sense and movement of the eye.Disorders of the optic nerve, the primary nerve to the eye.Causes of Unequal Pupil Sizes in Dogs Nervous System Causes Nervous system abnormalities, as well as infection, inflammation, cancer or trauma involving the eye can also result in anisocoria. Anisocoria (Different Pupil Sizes) in Dogs Overview of Anisocoria (Uneven Pupils) in DogsĪnisocoria, a common problem in dogs, is an inequality of pupil size, when one pupil is dilated and the other is constricted. ![]()
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