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眼睑压力与眼表面接触。

Eyelid pressure and contact with the ocular surface.

机构信息

Contact Lens and Visual Optics Laboratory, School of Optometry, Queensland University of Technology, Brisbane, Queensland, Australia.

出版信息

Invest Ophthalmol Vis Sci. 2010 Apr;51(4):1911-7. doi: 10.1167/iovs.09-4090. Epub 2009 Oct 15.

DOI:10.1167/iovs.09-4090
PMID:19834035
Abstract

Purpose. To investigate static upper eyelid pressure and contact with the ocular surface in a group of young adult subjects. Methods. Static upper eyelid pressure was measured for 11 subjects using a piezoresistive pressure sensor attached to a rigid contact lens. Measures of eyelid pressure were derived from an active pressure cell (1.14-mm square) beneath the central upper eyelid margin. To investigate the contact region between the upper eyelid and the ocular surface, the authors used pressure-sensitive paper and the lissamine-green staining of Marx's line. These measures, combined with the pressure sensor readings, were used to derive estimates of eyelid pressure. Results. The mean contact width between the eyelids and the ocular surface estimated using pressure-sensitive paper was 0.60 +/- 0.16 mm, whereas the mean width of Marx's line was 0.09 +/- 0.02 mm. The mean central upper eyelid pressure was calculated to be 3.8 +/- 0.7 mm Hg (assuming that the whole pressure cell was loaded), 8.0 +/- 3.4 mm Hg (derived using the pressure-sensitive paper imprint widths), and 55 +/- 26 mm Hg (based on contact widths equivalent to Marx's line). Conclusions. The pressure-sensitive paper measurements suggested that a band of the eyelid margin, significantly larger than the anatomic zone of the eyelid margin known as Marx's line, had primary contact with the ocular surface. Using these measurements as the contact between the eyelid margin and the ocular surface, the authors believe that the mean pressure of 8.0 +/- 3.4 mm Hg is the most reliable estimate of static upper eyelid pressure.

摘要

目的。研究一组年轻成年受试者的静态上眼睑压力和与眼表面的接触。方法。使用刚性接触镜上附着的压阻压力传感器测量 11 名受试者的静态上眼睑压力。眼睑压力的测量值来自中央上眼睑边缘下方的主动压力传感器(1.14 平方毫米)。为了研究上眼睑和眼表面之间的接触区域,作者使用了压敏纸和 Marx 线的 lissamine-green 染色。这些测量值与压力传感器读数结合使用,用于得出眼睑压力的估计值。结果。使用压敏纸估计的眼睑和眼表面之间的平均接触宽度为 0.60 +/- 0.16 毫米,而 Marx 线的平均宽度为 0.09 +/- 0.02 毫米。计算得出的中央上眼睑的平均压力为 3.8 +/- 0.7 毫米汞柱(假设整个压力传感器都受到了加载),8.0 +/- 3.4 毫米汞柱(根据压敏纸印痕宽度得出),55 +/- 26 毫米汞柱(基于与 Marx 线等效的接触宽度得出)。结论。压敏纸测量表明,眼睑边缘的一个区域,明显大于被称为 Marx 线的眼睑边缘的解剖区域,与眼表面有主要接触。使用这些测量值作为眼睑边缘和眼表面之间的接触,作者认为平均压力 8.0 +/- 3.4 毫米汞柱是静态上眼睑压力最可靠的估计值。

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