why does my cats eyes keep watering
Look for symptoms of a "cold. " Cat colds are much like human colds. That is, you'll see things like a runny nose, runny eyes, and sneezing. Your cat may also be a bit more lethargic than normal. These symptoms in tandem may indicate your cat has a cold. However, a cold in a cat can be caused by a number of viruses or bacteria, so it's important for your cat to see the veterinarian. You shouldn't try to wait it out. Your cat can't pass a cold to you, and you can't pass a cold to a cat. However, they can pass cold viruses or bacteria to each other. Just like with humans, you won't find a "cure" for a viral cold. Rather, your can give your cat some medications to help alleviate some of the effects of the virus. Other medications may keep the virus from recurring. Colds can also lead to conjunctivitis, particularly if the cold is caused by herpes, chlamydia, or mycoplasma. With conjunctivitis, your cat will squint more and have watery eyes, but the discharge from your cat's eyes may be green, yellow, gray, dark, or rusty looking rather than clear.
The cornea and iris may turn colors, as well: the cornea may redden, while the iris may look dull. These symptoms may not show up in both eyes.
Epiphora is a condition that causes an abnormal overflow of tears. Causes of epiphora due to the shape of the eyes is seen in many breeds. The overproduction of tears can be congenital due to distichiasis turning in of the eyelashes, or entropion the turning in of the eyelid. The upper or lower lid may be affected. This condition may occur secondary to eye irritation. An absence of the eyelid is also possible in domestic shorthair cats. Epiphora is evident with the observation of an overflow of tears; tear drainage and/or staining on face. Other signs include: Congenital abnormalities include the occurrence of too large an opening of the eyelids, causing increased exposure of the eyeball in brachycephalic breeds.
Entropion is seen at birth in some breeds and can be acquired due to post-traumatic eyelid scarring and facial nerve paralysis. Eyelid tumors can be characterized by a small, raised patch of skin on the eyelid. Eyelid tumors are rare in cats, but when they do occur, the most common type is the squamous cell carcinoma (SCC), and the most commonly affected cats are white cats with non-pigmented eyelid margins. Conditions acquired by a cat can lead to epiphora. These conditions include rhinitis/sinusitis, which causes swelling adjacent to the tear drainage system; trauma or fractures of the bones in the face; foreign bodies in the eyes (e. g. , grass, seeds, sand, parasites). Tumors of the third eyelid, the conjunctiva of the eye, eyelids, nasal cavity, maxillary bone in the face, or in the sinuses located around the eyes will also be considered. A condition that causes the nasolacrimal duct (tear duct) to be obstructed, whether through inflammation due to an acquired condition, or because of a congenital abnormality, may also cause an overflow of tears.
Blockage of the nasolacrimal drainage system can be caused by congenital lack of normal openings on the eyelids into the tear drainage system. Extra openings can also form into the tear drainage system in abnormal positions, such as openings along the side of the face below the corner of the eye, closest to the nose. Other possibilities include lack of openings from the tear drainage system into the nose. Inflammation of the eyelids and conjunctiva can be due to infectious or immune-mediated causes. Disorders of the cornea are characterized by the presence of scratches/ulcers with or without inflammation. Inflammation of the front part of the eye, including the iris, can be present. Glaucoma is a condition in which the pressure within the eye is increased. Eyelid tumors are typically seen in older cats, especially those that spend a lot of time outdoors.
Your veterinarian will perform a thorough physical exam on your cat, taking into account the background history of symptoms and possible incidents that might have precipitated this condition. Your veterinarian may order radiographs to check for lesions in the nose or sinus area, and contrast material may be used to help differentiate structures. Your doctor may also order a magnetic resonance imaging (MRI) or computed tomography (CT) scan. In addition, a culture of the material in the eyes will be taken for laboratory analysis. However, surgical exploration may be the only way to obtain a definitive diagnosis. A flushing of the tear ducts may be used to dislodge any foreign material. If irritation is evident, your veterinarian may also employ the use of a fluorescein stain, a non-invasive dye that shows details of the eye under blue light, in order to examine the eye for abrasions or foreign objects.
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