Distribution of total monthly expenditure on dry eye treatment in 2008 and 2009. WaduthantriSamanthila Sian YongSiew Hua TanChien ShenLiang Xin LeeMan NagarajanSangeetha Htoon HlaMynt TongLouis 2013 <p>Distribution of total monthly expenditure on dry eye treatment in 2008 and 2009.</p>