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. Author manuscript; available in PMC: 2023 Jan 25.
Published in final edited form as: Ocul Surf. 2021 Nov 11;23:12–23. doi: 10.1016/j.jtos.2021.10.009

Table 1.

Distribution of cholesteryl and wax esters in tears and meibum.

Tears (n = 164) Meibum (n = 179)
Cholesteryl esters (CEs)
Total no. of CEs 126 125
No. of CEs in >50% subjects 101 93
Most frequent CEs 16:0, 16:1; 1,18:1, 18:0, 18:1;1, 20:1, 20:0, 20:1; 1, 22:2, 22:1, 22:0, 22:1; 1, 24:2, 24:1, 24:0, 25:1, 24:1; 1, 24:0; 1, 26:1, 26:0, 26:1; 1, 28:1, 28:0, 28:1; 1, 30:1, 30:0, 31:0, 32:2, 32:1 20:0, 16:1; 1, 18:1, 18:1; 1, 20:2, 20:1, 20:1; 1, 22:1, 22:0, 22:1; 1, 24:1, 24:0, 24:1; 1, 24:1, 24:0; 1, 26:1, 28:1, 28:0, 28:1; 1, 30:1, 32:1
Least frequent CEs 20:0; 2, 16:4, 13:0; 2, 17:4, 2:0 20:0; 2, 13:0; 2, 2:0, 14:0; 1, 15:0; 2
Most abundant CEs 26:0, 24:0, 24:1; 1, 24:1, 20:0 24:0, 24:1; 1, 26:0, 24:1, 20:0
Least abundant CEs 12:0; 2, 16:4, 13:0; 2, 17:4, 2:0 12:0; 2, 13:0; 2, 2:0, 14:0; 1, 15:0; 2
Wax esters (WEs)
Total WEs 86 86
No. of WEs in >50% subjects 98 79
Most frequent WEs 16:1/24:0, 17:0/23:0, 15:0/26:0, 16:0/25:0, 17:0/24:0, 18:1/24:0, 16:0/26:0, 17:0/25:0, 17:0/26:1, 18:1/25:0, 17:0/26:0, 18:1/26:0, 17:0/27:0, 18:1/28:1, 18:1/30:1 17:0/24:0, 18:1/25:0, 17:0/26:0, 18:1/26:0, 15:0/26:0, 16:0/25:0, 18:1/24:1, 16:1/26:0, 18:1/24:0, 16:0/26:0, 17:0/25:0, 18:1/26:1, 17:0/27:0, 18:0/26:0, 18:1/27:0
Least frequent WEs 19:0/23:0, 18:2/32:0, 17:1/21:0, 16:2/24:0, 20:1/20:0 20:1/20:0, 19:0/23:0, 17:1/21:0, 19:0/20:0, 18:2/32:0
Most abundant WEs 18:1/24:0, 17:0/26:0, 18:1/26:0, 17:0/25:0, 17:0/24:0 18:1/26:0, 18:1/24:0, 17:0/26:0, 18:1/25:0, 17:0/24:0
Least abundant WEs 18:2/32:0, 17:1/21:0, 19:0/20:0, 20:1/20:0, 16:2/24:0 20:1/20:0, 19:0/23:0, 19:0/20:0, 17:1/21:0, 16:2/24:0

Note: Abundance is based on the sum of intensities corrected for the internal standard.