Jose C J
Pathology of the eye in cattle bearing carcinoma of the mucosa of the ethmoid - Mannuthy Department of Pathology, College of Veterinary and Animal Sciences 1982
Eighteen cattle from different parts of Kerala,
affected with ethmoid carcinoma were subjected to
detailed investigations of the ocular changes. The
incidence of eye involvement in cases of ethmoid tumour
in cattle was assessed on the basis of reports or
informations received from field veterinarians and cattle
owners from different dietricts of Kerala. Incidence,
clinical manifestations, intraocular pressure, gross
pathological cbanges and biometry of the eye were studied.
The effect of the tumour mass on the eye and the possible
causes for the different ocular changes has been discussed.
The highest incidence was found in the age group of
six to ten years. The earliest case was recorded in a
heifer aged four years.
The frequency of the incidence was high in females
(88%). Crossbred animals were found to be more affected
(83%). The tumour was also encounter~d in three purebred
cattle.
Ninetyfour percent of the tumour affected animals
showed exophthalmos either unilateral (82%) or bilateral
(18%). Tbe left eye was affected in 14 percent and the
right eye in 86 percent cases. It is suggested that
37
exophthalmos can be considered as a pathognomonic clinical
manifestation for ethmoid tumour affected cattle.
Blindness was observed in 90 percent of the affected
eyes, ectropion in 85 percent cases and corneal cbanges
in the form of keratitis or opaCities in 90 percent cases.
Episcleritis, anterior uveitis, euphora, purulent discharges
were the other clinical manifestations.
Glauc~a, was found to be a characteristic feature
in ethmoid caroinoma.
Involvement of the optic nerve, optic diso, retina,
vitreous and other deep structures of the eyes were also
notioed by gross examination of the whole eye at autopsy.
The lens showed varying degrees of displacement or luxation.
636.0896 / JOS/TA
Pathology of the eye in cattle bearing carcinoma of the mucosa of the ethmoid - Mannuthy Department of Pathology, College of Veterinary and Animal Sciences 1982
Eighteen cattle from different parts of Kerala,
affected with ethmoid carcinoma were subjected to
detailed investigations of the ocular changes. The
incidence of eye involvement in cases of ethmoid tumour
in cattle was assessed on the basis of reports or
informations received from field veterinarians and cattle
owners from different dietricts of Kerala. Incidence,
clinical manifestations, intraocular pressure, gross
pathological cbanges and biometry of the eye were studied.
The effect of the tumour mass on the eye and the possible
causes for the different ocular changes has been discussed.
The highest incidence was found in the age group of
six to ten years. The earliest case was recorded in a
heifer aged four years.
The frequency of the incidence was high in females
(88%). Crossbred animals were found to be more affected
(83%). The tumour was also encounter~d in three purebred
cattle.
Ninetyfour percent of the tumour affected animals
showed exophthalmos either unilateral (82%) or bilateral
(18%). Tbe left eye was affected in 14 percent and the
right eye in 86 percent cases. It is suggested that
37
exophthalmos can be considered as a pathognomonic clinical
manifestation for ethmoid tumour affected cattle.
Blindness was observed in 90 percent of the affected
eyes, ectropion in 85 percent cases and corneal cbanges
in the form of keratitis or opaCities in 90 percent cases.
Episcleritis, anterior uveitis, euphora, purulent discharges
were the other clinical manifestations.
Glauc~a, was found to be a characteristic feature
in ethmoid caroinoma.
Involvement of the optic nerve, optic diso, retina,
vitreous and other deep structures of the eyes were also
notioed by gross examination of the whole eye at autopsy.
The lens showed varying degrees of displacement or luxation.
636.0896 / JOS/TA