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Tong L, Carkeet A, Saw SM, Tan DT.Tong L, et al.Optom Vis Sci. 2001 Dec;78(12):881-7. doi: 10.1097/00006324-200112000-00010.Optom Vis Sci. 2001.PMID: 11780665
Carkeet A, Luo HD, Tong L, Saw SM, Tan DT.Carkeet A, et al. Among authors: tong l.Vision Res. 2002 Jun;42(14):1809-24. doi: 10.1016/s0042-6989(02)00114-1.Vision Res. 2002.PMID: 12127112Free article.
Tong L, Saw SM, Carkeet A, Chan WY, Wu HM, Tan D.Tong L, et al.Optom Vis Sci. 2002 Sep;79(9):606-13. doi: 10.1097/00006324-200209000-00012.Optom Vis Sci. 2002.PMID: 12322931
Tong L, Saw SM, Tan D, Chia KS, Chan WY, Carkeet A, Chua WH, Hong CY.Tong L, et al.Optom Vis Sci. 2002 Oct;79(10):650-7. doi: 10.1097/00006324-200210000-00011.Optom Vis Sci. 2002.PMID: 12395920