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Study Of The Reliability In One Dimensional Size Measurement With Digital Slit Lamp Microscpe
Nov 16, 2017

The reliability of digital slit lamp microscope as a quantitative analysis tool applied to one dimensional dimension measurement.Methods: Three observers were treated with single   method at 4 times, 10 times, 16 times, 25 times, 40 times and 4 times, 10 times, 16 times the objective magnification, the simulated caliper on the vernier caliper pupil and corneal diameter of 4.00 mm and 10.00 mm spacing, the use of domestic digital slit lamp microscope image acquisition and repeated measurements, the measurement results (A, B, C) were used to measure the image of 4.00 mm, and the mean value of the measured results was between 3.98 and 4.06. The measurement of the image of 10.00 mm , The measured mean number is between 10.00 and 10.04.

The measurement results of 4.00 mm showed that the difference between the measured value and the real value was statistically significant except for the measurement A4 times, the measurement B25 times, the measurement C16 times and the measurement 25 times .10.00 mm The results of the measurement showed that the difference between the measured value and the true value was statistically significant except for the A10 magnified by the surveyor.

Comparing the measurement result of the same size at different magnification with the same measure, Size measurement no statistics Differences between the other measurements at different magnifications on the same size measurement results were statistically significant differences in the same object under the same magnification of the same size compared to the same magnification in addition to 4 magnification 4.00 mm The most significant difference between the two methods was statistically significant except for the difference between the other measurements.The coefficients of variation of all the measurements were less than 5%, while the coefficients of variation tended to decrease with the increase of magnification. : T

he Digital slit lamp microscope is a one-dimensional dimension measurement tool with good precision. Reliability analysis of measurements before they are used to make determinations helps to reduce the interference of systematic errors in the analysis of measurement results.
 




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