I recently paid a visit to a cow with a sore eye that was not improving, despite regular treatment by the herd owner.

On closer clinical examination, a serious condition called squamous cell carcinoma (SCC) was diagnosed. SCC is the most frequently diagnosed cancerous tumour in the bovine eye, which often results in condemnation at slaughter, with the farmer suffering significant economic loss as a result. Older cattle (older than five) are more susceptible to this condition.