Kovalcuka Liga, König Nelli Alexandra Margarethe, Petersen Pia Valentina Helen, Sneidere Aija, Malniece Aija
Clinical Institute, Faculty of Veterinary Medicine, Latvia University of Life Sciences and Technologies, LV-3004 Jelgava, Latvia.
Vet Sci. 2023 Jun 8;10(6):392. doi: 10.3390/vetsci10060392.
A complete ophthalmological examination, including basic diagnostic tests such as the Schirmer tear test (STT) and intraocular pressure (IOP) measurement performed by tonometry in particular species and breeds, is essential for obtaining a clear diagnostic result and avoiding diagnostic misinterpretations. STT and IOP values have been poorly described for sheep. Therefore, this study aimed to determine the normal range for STT and tonometry values in clinically normal Latvian Darkhead lambs and ewes. Both eyes of 100 sheep (200 eyes)-50 lambs (1-3 months old) and 50 ewes (1-8 years old)-underwent complete ophthalmic examinations, including STT and IOP evaluation. The mean ± standard deviation of STT values for both eyes in lambs and ewes were 13.12 ± 3.91 mm/min and 13.68 ± 4.09 mm/min, respectively. The IOP in lambs and ewes was 14.04 ± 3.68 mmHg and 19.16 ± 3.24 mmHg, respectively. Furthermore, the suggested reference range for the STT was 12.00-14.23 mm/min in lambs and 12.52-14.84 mm/min in ewes, while the reference IOP range was determined to be 13.00-15.08 mmHg in lambs and 18.24-20.08 mmHg in ewes. No statistically significant differences in STT and IOP values were observed for both eyes. However, the IOP value for both eyes was statistically significantly higher in ewes compared to lambs ( < 0.01). This study provides reference values for the STT and IOP in healthy Latvian Darkhead lambs and ewes.
全面的眼科检查，包括基本诊断测试，如泪液分泌试验（STT）以及针对特定物种和品种通过眼压计测量眼压（IOP），对于获得明确的诊断结果和避免诊断误解至关重要。绵羊的STT和IOP值鲜有描述。因此，本研究旨在确定临床正常的拉脱维亚黑头羔羊和母羊的STT和眼压计测量值的正常范围。对100只绵羊（200只眼）——50只羔羊（1至3月龄）和50只母羊（1至8岁）的双眼进行了全面眼科检查，包括STT和IOP评估。羔羊和母羊双眼STT值的平均值±标准差分别为13.12±3.91毫米/分钟和13.68±4.09毫米/分钟。羔羊和母羊的IOP分别为14.04±3.68毫米汞柱和19.16±3.24毫米汞柱。此外，建议的羔羊STT参考范围为12.00至14.23毫米/分钟，母羊为12.52至14.84毫米/分钟，而参考IOP范围确定为羔羊13.00至15.08毫米汞柱，母羊18.24至20.08毫米汞柱。双眼的STT和IOP值未观察到统计学显著差异。然而，母羊双眼的IOP值与羔羊相比在统计学上显著更高（<0.01）。本研究提供了健康的拉脱维亚黑头羔羊和母羊的STT和IOP参考值。
