眼部眼轴长度测量的超声法与摄影法比较。
Comparison of ultrasonic and photographic methods of axial length measurements of the eye.
作者信息
Grey R H, Perkins E S, Restori M
出版信息
Br J Ophthalmol. 1977 Jun;61(6):423-7. doi: 10.1136/bjo.61.6.423.
The axial length of 25 eyes was measured by the photographic method and by ultrasonography. The photographic measurements were consistently larger than the ultrasonic, but analysis gave a correlation coefficient of r = 0-8483. The results suggest that the centre of rotation of the eye lies posterior to the anatomical centre of the globe. Using an empirical method of calculation and allowing for an error of +/-0-3 mm in the ultrasonic measurement, the photographic results were within +/-0-5 mm in 13 eyes and +/-1-0 mm in 7 eyes. The photographic method may be helpful as a guide to the power of intraocular lens implants and for comparing axial lengths in population studies.
采用摄影法和超声检查法测量了25只眼睛的眼轴长度。摄影测量结果始终大于超声测量结果，但分析得出相关系数r = 0.8483。结果表明，眼球的旋转中心位于眼球解剖中心的后方。采用经验计算方法，并考虑到超声测量中±0.3 mm的误差，13只眼睛的摄影测量结果在±0.5 mm以内，7只眼睛在±1.0 mm以内。摄影法可能有助于指导人工晶状体植入的屈光度，并用于人群研究中眼轴长度的比较。
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