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ABSTRACT
Glare which affects comfort or causes distraction is known as discomfort glare and glare which affects the ability to see any object is known as disability glare. Discomfort glare is mainly caused by artificial lighting of the workplace. Discomfort glare can be measured by using Visual Comfort Probability (VCP) or Unified Glare Rating (UGR). This paper discuses the discomfort evaluation methods and presents the calculations of UGR of a specific workplace. The discomfort glare is calculated by using DIALux lighting simulation software, Techno Team LMK measuring system and by using developed Python program model. The results are compared and verified with the feedback received from occupants/users of that workspace. A comparison of the UGR values determined by the DIALux lighting simulation software, LMK measurement system and subjective estimation shows that the values obtained by LMK measurement system are more accurate and are matching with the feedback received from occupants of the workspace.