Arbuckle J B, Khalil L F
Vet Rec. 1978 Mar 11;102(10):207-10. doi: 10.1136/vr.102.10.207.
Thelazia skrjabini and T gulosa were found in the eyes of 237 of 566 bovine heads (41.9 per cent) examined in a Surrey abattoir during 1976. The prevalence of infection increased during late June, July and August, when a new generation of worms emerged in eyes. The burden in eyes ranged from one to 170 worms, with a mean count of 10.44 +/- 3.23. Worms were found behind and in third eyelids and in the lacrimal ducts of lower eyelids, which makes their detection very difficult by clinical examination. They were significantly more common in cattle 21 to 38 months old than in those less than 21 months old. Lesions occurred in 14 of 327 (4.3 per cent) infected eyes. No worms were seen in eye washings from cattle in nine herds experiencing outbreaks of keratoconjunctivitis.
1976年，在萨里郡一家屠宰场检查的566头牛中，有237头（41.9%）的眼睛里发现了斯氏吸吮线虫和古氏吸吮线虫。6月下旬、7月和8月感染率上升，此时新一代线虫出现在眼睛里。眼睛中的虫数从1条到170条不等，平均计数为10.44±3.23条。在第三眼睑后方、第三眼睑内以及下眼睑泪管中发现了线虫，这使得通过临床检查很难检测到它们。它们在21至38月龄的牛中比在小于21月龄的牛中明显更常见。在327只受感染眼睛中的14只（4.3%）出现了病变。在9个发生角结膜炎疫情的牛群的牛眼冲洗液中未发现线虫。
