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  • Title: Controlling ocular squamous cell carcinoma in Hereford cattle.
    Author: Sloss V, Smith TJ, De Yi G.
    Journal: Aust Vet J; 1986 Aug; 63(8):248-51. PubMed ID: 3790010.
    Abstract:
    In 3 herds 737 Hereford cattle were examined for neoplastic ocular lesions at intervals ranging from 20 to 242 days. Initially all lesions greater than 3 mm diameter were treated by cryosurgery; smaller lesions were left untreated. At subsequent inspections, lesions which had increased to 5 mm diameter were treated. The prevalence of ocular lesions in the herds ranged from 8.1 to 45.7% at the commencement of the study, and from 1.5 to 8.8% after 3.5 years. In treated cattle 71% of lesions regressed after one or two treatments. Seventy-five percent of the small untreated lesions regressed. The progression of lesions and occurrence of new lesions was highest during summer and lowest during winter. It was concluded that inspection of eyes for lesions should be at intervals of 3 to 4 months, and include one during the summer. It is feasible for owners to detect and identify cattle with ocular lesions and to present for treatment those that have grown since the preceding inspection to a size nearing or exceeding 5 mm diameter.
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