一种创新且简单的方法，在定量评估视网膜后段病变方面可与高清光学相干断层扫描相媲美。
An innovative and simple method, clinically comparable to high-definition optical coherence tomography in quantifying posterior segment lesions in the retina.
机构信息
Department of Ophthalmolgy, Believers Church Medical College Hospital, Kuttapuzha, Thiruvalla, Kerala, India.
Department of Community Medicine, Believers Church Medical College Hospital, Kuttapuzha, Thiruvalla, Kerala, India.
出版信息
Indian J Ophthalmol. 2020 May;68(5):875-879. doi: 10.4103/ijo.IJO_1188_19.
PURPOSE
To introduce a simple and inexpensive method using a fundus contact lens and a reticle, to measure retinal lesions comparing it with values obtained with high-definition optical coherence tomography (HD-OCT). This study considers optic disc as the object for comparison.
METHODS
: Patients underwent routine ophthalmologic examination and their horizontal optic disc diameter was measured, both with the reticle and OCT. For measurement with reticle a simple equation was deduced, x = 0.7y, where x corresponds to the actual image size and y to the reticle scale reading in millimeters.
RESULTS
: An aggregate of 127 eyes of 75 patients were dilated and examined. The calculated mean diameter according to OCT was 1.639 mm (standard deviation = 0.179) and that assenting to reticle was 1.713 mm (standard deviation = 0.175), with a difference in mean being 0.089 mm.
CONCLUSION
Values obtained by this new method was found to be comparable with the OCT values for retinal measurements, useful for ophthalmologists who cannot afford expensive and sophisticated machines.
目的
介绍一种使用眼底接触镜和标线的简单且廉价的方法，通过与高清光学相干断层扫描（HD-OCT）获得的值进行比较来测量视网膜病变。本研究将视盘作为比较对象。
方法
对患者进行常规眼科检查，并使用标线和 OCT 测量其水平视盘直径。对于标线测量，推导出一个简单的方程，x = 0.7y，其中 x 对应实际图像尺寸，y 对应毫米标线刻度读数。
结果
对 75 例 127 只眼进行散瞳检查。根据 OCT 计算的平均直径为 1.639 毫米（标准差 = 0.179），而根据标线的平均直径为 1.713 毫米（标准差 = 0.175），平均直径差异为 0.089 毫米。
结论
该新方法获得的值与 OCT 视网膜测量值相当，对于无法使用昂贵复杂机器的眼科医生很有用。
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