A two and a half-year-old female Persian cat was presented with a history of bilateral chronic ocular discharge. The routine ophthalmic examination was performed, including Schirmer tear test, slit-lamp biomicroscopy, binocular indirect ophthalmoscopy, applanation tonometry and Jones test. A fine needle aspiration cytology of a mass underneath the right eye´s bulbar conjunctiva was performed. Epiphora, bilateral mucous ocular discharge and a volume increase in the bulbar conjunctiva on the dorsolateral quadrant of the right eye were observed. No alterations were found in the anterior and posterior chambers. The intraocular pressure values were within the normal range. The Jones test identified bilateral nasolacrimal duct obstruction. The fine needle aspiration cytology of the mass found in the right eye dorsolateral quadrant showed adipose tissue. The ophthalmic examinations and the fine needle aspiration cytology results showing the presence of adipose tissue in the right eye dorsolateral quadrant indicated orbital fat prolapse. The animal was reexamined monthly for three months, meanwhile the lesions remained unchanged despite the treatment's absence. Conclusion, orbital fat prolapse may occur in cats. The diagnosis must be confirmed by fine needle aspiration cytology or lesion histopathology (Spiess & Hakanson, 1998). Therapeutic measures may be applied, but are not compulsory due to the absence of pain or further complications (Dimison, 1993).

References

1.  Spiess, B. M.; Hakanson,, N. W. Diseases of the canine dog. In: GELATT, K. N. Veterinary Ophthalmology. Philadelphia: Lippincoot Williams & Wilkins, 1998. cap. 13, p. 511-533

2.  Dimison, W. G. Sialadenitis associated with periorbital disease in a dog. J Am Vet Assoc, n. 202. p. 1983-1985, 1993.