MEASUREMENTS OF INTRAOCULAR STRAYLIGHT, VISUAL SENSITIVITY, AND DISCOMFORT GLARE FOR YOUNG AND ELDERLY OBSERVERS

摘要

To reveal the mutual relation between the intraocular straylight, visual sensitivity, and discomfort glare for elderly and young observers, triad measurements were carried out using the same white LED source. Multiple regression analysis to estimate discomfort glare sensitivity using straylight parameter and visual sensitivity as explanatory variables was applied to the results of both groups. Correlation coefficient between the estimated and experimental values is 0,67 for elderly group, indicating that these two factors contribute to the subjective evaluation of discomfort glare for individual observers. On the other hand, estimation was not so good for young group, suggesting that other factors, e.g., psychological criterion difference of subjective rating, affect on individual differences of discomfort glare for young observers.