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首页> 美国卫生研究院文献>Open Veterinary Journal >The influence of the tonometer position on canine intraocular pressure measurements using the Tonovet® rebound tonometer
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The influence of the tonometer position on canine intraocular pressure measurements using the Tonovet® rebound tonometer

机译：眼压计位置对使用Tonovet®回弹眼压计进行犬眼压测量的影响

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摘要

The objective of this study was to assess the variability of readings made using the Tonovet® rebound tonometer for measurement of intraocular pressure (IOP) in the peripheral cornea and in angulated positions on the canine corneal surface. Forty-six client-owned dogs admitted for ophthalmic evaluation at the Queen’s Veterinary School Hospital, University of Cambridge were included in the study. IOP readings were taken at a variety of locations and using the tonometer at a number of different angles to the cornea: 1) Perpendicularly at center of the cornea (CC); 2) At the center of the cornea but with the tonometer positioned at four angles, and 3) At four different points on the peripheral cornea. All values were compared with the values recorded at the recommended CC position. IOP values were significantly underestimated in seven positions, with median and interquartile range from 12.1 ± 4 mmHg (nasal on periphery) to 15 ± 5 mmHg (laterally angled at center), varying between 0 mmHg to 2.9 mmHg from the CC value. While dorsally angled in the central cornea were not significantly different from those at CC (p = 0.09). Median values were lower for measurements in peripheral positions when compared to angled central positions. These results demonstrate that angling the tonometer or measuring in peripheral regions can result in small but statistically significant underestimation of IOP values.
机译：这项研究的目的是评估使用Tonovet ®回弹眼压计测量读数的变异性，该测量仪用于测量角膜周边和角膜表面成角度位置的眼内压（IOP）。这项研究包括了在剑桥大学皇后兽医学校医院接受眼科评估的四十六只客户拥有的狗。在不同位置使用眼压计以与角膜不同角度的多个角度获取IOP读数：1）垂直于角膜（CC）中心； 2）在角膜的中心，但眼压计以四个角度放置； 3）在周边角膜的四个不同点。将所有值与在推荐CC位置记录的值进行比较。七个位置的IOP值被大大低估了，中位数和四分位数范围从12.1±4 mmHg（鼻翼位于周围）至15±5 mmHg（中心呈横向倾斜），从CC值在0 mmHg至2.9 mmHg之间变化。虽然中央角膜的背侧角度与CC处的角度无显着差异（p = 0.09）。与成角度的中心位置相比，外围位置的测量中值较低。这些结果表明，使眼压计倾斜或在周边区域进行测量可能会导致IOP值的偏小但在统计上显着低估。

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