Chlamydia infection is seen in cattery situations in which asymptomatic queens carry the infectious agent in the urogenital tract. Treatment consists of topical tetracycline, chloramphenicol or erythromycin 3-4 times a day for 10-14 days. Polymerase chain reaction is more sensitive for detecting Chlamydia infection than culture. Intracytoplasmic inclusion bodies may be found during the first 2-9 days after the onset of clinical signs. Formation of conjunctival follicles may be present. Clinical signs of Chlamydia psittaci infection include conjunctival hyperemia and chemosis in one or both eyes. Other infectious causes include salmonella, M. The most common causes for feline conjunctivitis include infection with Chlamydia psittaci, Mycoplasma felis or feline herpes virus 1 infection. ConjunctivitisĬonjunctivitis is a common problem in cats and is usually of infectious origin. Decreasing the amount of light used during the examination usually prevents this problem, but 1% tropicamide may be necessary to dilate the pupil for complete examination of the fundus. Pupillary light reflexes are usually brisk and complete in cats, limiting visualization of deeper intraocular structures. If this doesn’t work, it may be necessary to apply topical anesthetic, such as 0.5% proparacaine, to the cornea, and gently push the third eyelid out of the way with a cotton tip applicator. Limiting restraint to the absolute minimum necessary in combination with avoiding very bright light during the ophthalmic examination will prevent third eyelid protrusion in most cats. Cats have the ability to actively protrude the third eyelid, and prevent visualization of the globe. A few gentle taps on the eyelids prior to repeating the menace gesture will usually solve this problem. Some cats, especially brachycephalic cats, may not respond initially. Many cats will respond with a subtle movement of the upper eyelid only. The menace response is often subtle in cats. A few differences exist between dogs and cats that present the clinician examining a feline patient with a few unique challenges. Ophthalmic examination of a feline patient follows the same principles as ophthalmic examination of the canine patient. Books & VINcyclopedia of Diseases (Formerly Associate).VINcyclopedia of Diseases (Formerly Associate).
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