diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
index 498b055d8..531bf8f93 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
@@ -403,7 +403,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
                       x.ReadingTableQuestionTrial.QuestionMark,
                   }).ToListAsync();
 
-                result.LowPPDSDi = lowPPDAnswerList.Where(x => x.QuestionMark == QuestionMark.PPD).Select(x => x.Answer).FirstOrDefault().IsNullOrEmptyReturn0();
+                result.NadirPPD = lowPPDAnswerList.Where(x => x.QuestionMark == QuestionMark.PPD).Select(x => x.Answer).FirstOrDefault().IsNullOrEmptyReturn0();
                 result.LowPPDLDi = lowPPDAnswerList.Where(x => x.QuestionMark == QuestionMark.MajorAxis).Select(x => x.Answer).FirstOrDefault().IsNullOrEmptyReturn0();
                 result.LowPPDSDi = lowPPDAnswerList.Where(x => x.QuestionMark == QuestionMark.ShortAxis).Select(x => x.Answer).FirstOrDefault().IsNullOrEmptyReturn0();
                 result.LowPPDVisit = await _visitTaskRepository.Where(x => x.Id == lowPddTaskid).Select(x => x.TaskBlindName).FirstOrDefaultAsync();