Cytology of Conjunctival Scrapings of Domestic Feline Species in Western Michigan
House, Ronald A.
MetadataShow full item record
Recognizing how ocular tissues, especially how the conjunctiva responds to infectious and noninfectious diseases may enhance the diagnosis and treatment of a problem. This research concentrates on the cytology of conjunctival scrapings of randomly selected normal and abnormal domestic feline species in the Western Michigan area in order to formulate a normal cell count and type of cell population. Along with the clinical histories, scrapings were taken from the center lower palpebral conjunctiva of both the right and left eyes. The scrapings were then microscopically evaluated using a modified Wright's stain. Epithelial cells, lymphocytes, polymorphonuclear leukocytes, eosinophils, mast cells, and erythrocytes were quantified using a grid style format. Results exhibited a significant difference in the average population count and cell type in cats with clinically infected conjunctivas compared to those that appeared clinically normal. Infectious cell populations, on the average were about 20 - 50% higher in those cats that clinically exhibited conjunctivitis in physical examinations to those that did not. It was also seen that numerous feline subjects displaying clinically normal conjunctivas, still contained a modest amount of infectious cell types in their cytologies. These results can aid a clinician in the probable therapy and/or ocular treatment necessary for a feline patient with an increased or decreased cell population. Further, results indicated that conjunctival scrapings are most beneficial when only considered along with the clinical examinations of the conjunctivas.