Purpose : This study analyzes the parameters necessary for glasses prescriptions and presents objective data for accurate and comfortable glasses prescriptions Methods : For 41 adults over 20 years of age (men: 28, women: 13), nasopupillary distance, interpupillary distance, optical center height, pantoscopic angle, face form angle, and vertex distance were measured using photographs, True View I, Ruler, and Smart Centering Device measurement methods, and the accuracy (error) was compared using photographic measurement method as the standard. In addition, the correction value for clinical application was calculated through the error correction equation. Results : There were significant differences in optical center height, pantoscopic angle, face form angle, and vertex distance in the measurement methods of the four devices (p<0.050). The correction values based on the standard photographic measurement method, were statistically significant (p<0.050) with high correlation coefficients of the nasopupillary distance, interpupillary distance, optical center height, pantoscopic angle, face form angle, and vertex distance in the True View I. In the case of ruler, the correlation coefficients between the nasopupillary distance, interpupillary distance, optical center height and vertex distance were high and statistically significant (p<0.050). The Smart Centering Device method was statistically significant only for the face form angle (p<0.050). The 95% confidence intervals for the correction values showed that the Smart Centering Device had a narrower range and less deviation at the nasopupillary distance, while all other parameters were narrower in the True View I and had the least deviation from the mean values. Conclusion : The results of measuring the parameters required for glasses prescriptions using four different measuring devices showed differences depending on the measurement method, and correction values that can be applied in place of photographic measurements in clinical practice were suggested.