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Keratitis (keritis) - inflammation of the cornea.

Etiology. The cause of the disease can be mechanical, chemical, infectious, invasive, neurogenic effects, and also symptomatic - myt, foot and mouth disease, metritis, malignant fever, equine influenza, dog plague, etc. Keratitis is divided into superficial (conjunctival) according to the histological structure of the cornea deep (parenchymal) and posterior; by clinical and morphological changes - catarrhal, vascular, aphthous, pustular, purulent, neurotrophic, dystrophic and parenchymal.

Clinical signs. Common to all forms of keratitis are corneal clouding of the eye, pericorneal vascular hyperemia, impaired gloss and specularity, photophobia, a sharp increase in sensitivity, eyelid spasms, exudate secretion.

For the surface catarrhal keratitis is characterized by the release of mucous exudate, on the cornea can be eroded. With superficial vascular keratitis, blood vessels form on the cornea, the opacification is gray-red, granulation tissue may form; with purulent - there is a discharge of purulent exudate from the palpebral fissure, the formation of blood vessels on the cornea is possible; with fluktenuleznom - education on the cornea of ​​small elevations with slightly turbid contents, with dystrophic - the cornea loses sensitivity, ulcers appear in the center, which decrease or increase. Parenchymal (deep) keratitis can occur in two forms: limited (as an abscess) and diffuse (diffuse) with damage to the entire cornea. When an abscess first forms a small infiltrate, and then an abscess. When diffuse cornea necrosis occurs, ulcers, fibrin overlay, vascular germination. When back keratitis opacification is observed from the inner surface of the cornea, the outer surface is smooth and shiny.

The diagnosis is made on the basis of clinical signs. The prognosis for superficial keratitis is often favorable, for deep ones it is cautious.

Treatment. Eliminate the causes of the disease. Animals give rest. Conduct toilet eye, infraorbital blockade by Gatin. Apply trivitamin, retinol. When an abscess of the eye should be an abscess after anesthesia open. The rest of the treatment, as with purulent conjunctivitis.

Infectious keratoconjunctivitis. Acute infectious disease of the cornea and conjunctiva of the eye. It can occur in the form of an enzoi with a lesion of up to 80–90% of the livestock.
The causative agent of the disease is rickettsia (Rickettsia cojunctivae bovis). More often young cattle are sick, but sheep, pigs, horses can be ill. Carriers of the pathogen are flies, ticks, etc. The incubation period lasts 3–10 days. Initially, catarrhal conjunctivitis and parenchymal keratitis of one eye develops, and the second is also affected by stalemate. Subsequently, the cornea becomes yellow-red, an abscess forms in its center, and then an ulcer. There may be a complete perforation of the cornea. The duration of the disease is 20–35 days. After recovery, a scar is formed in the eye.

Forecast cautious.

Treatment. Patients are isolated in a dark room, the eye is washed with a solution of furatsilin (1: 5000), eye drops (0.5% solution of zinc sulfate and 3% solution of boric acid), infra-ocular gatin blockage is performed, Novocain-chlortetracycline ointment is injected ( novocaine - 5.0, chlortetracycline - 5.0, petrolatum - 90.0), syntomycin emulsion (10%), protargol (5%), corticosteroid ointment with antibiotics, solutions and albucide ointment. Dry heat recommended.

Invasive keratoconjunctivitis. Telazioz - worm disease of the eye (conjunctiva and cornea) and the lacrimal-nasal canal. They are ill with cattle, less often horses, sometimes pigs and dogs. It flows in the form of enzootia. The causative agent is the nematode Thelasia rhodesi (most commonly distributed in the west), Thelasia gulosa (in the east), Thelasia skrjabini (in the east and south).

The first was found under the conjunctiva and the third century, the second and the third in the ducts of the lacrimal gland. The intermediate owner is a fly.

Clinical signs. As a rule, the disease is widespread. Starts catarrhal conjunctivitis, and then goes into the purulent and the cornea. In prolonged cases, ulcers form on the cornea, then scars and cataracts.

Diagnosis. With mass surveys of cattle can be found in the conjunctival sac of parasites.

Treatment. The eye is washed with a solution of Lugol (1: 1000), 3% solution of boric acid. Washing is repeated every 2–3 days. It is better to wash the nasolacrimal canal. In the formation of ulcers and walnut good effect give novocainic blockade of the eye, tissue therapy.

Prevention. Since June, in dysfunctional farms, clinical examinations of the herd are carried out 2 times a month. Detected diseased animals are isolated and treated. They also fight with flies.
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    Keratitis is an infectious inflammatory disease of the cornea. Keratitis is characterized by pain, often severe, a decrease in visual acuity and intense tearing. See the article EYES (PROBLEMS), with the addition that a person experiences anger and distress, and also holds back tears, although his emotional body is in dire need of them. See also page.
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