Tear Lipid Layer Thickness in Children after Short-Term Overnight Orthokeratology Contact Lens Wear
Table 3
LLT (average, minimal, and max) and blinking pattern of 56 OK eyes at baseline.
Baseline
LLT average (nm) 54.29 ± 22.13, n = 56
LLT max (nm) 80.36 ± 20.47, n = 56
LLT min (nm) 42.30 ± 19.66, n = 56
Blinks 10.89 ± 4.79, n = 56
r = −0.14, ,n = 56
r = −0.10, ,n = 56
r = −0.18, ,n = 56
Partial blinks 5.70 ± 5.06, n = 56
r = 0.18, ,n = 56
r = 0.13, ,n = 56
r = 0.17, ,n = 56
Rate of partial blinks 0.51 ± 0.33, n = 56
r = 0.28,,n = 56
r = 0.23, ,n = 56
r = 0.30,,n = 56
1 week
LLT average (nm) 62.41 ± 23.08, n = 56
LLT max (nm) 83.86 ± 18.93, n = 56
LLT min (nm) 49.96 ± 22.94, n = 56
Blinks 11.23 ± 4.90, n = 56
r = 0.25, ,n = 56
r = 0.22, ,n = 56
r = 0.18, ,n = 56
Partial blinks 7.59 ± 5.72, n = 56
r = 0.45,,n = 56
r = 0.48,,n = 56
r = 0.45,,n = 56
Rate of partial blinks 0.65 ± 0.34, n = 56
r = 0.48,,n = 56
r = 0.54,,n = 56
r = 0.53,,n = 56
1 month
LLT average (nm) 61.39 ± 24.36, n = 56
LLT max (nm) 82.43 ± 18.98, n = 56
LLT min (nm) 50.57 ± 25.17, n = 56
Blinks 10.46 ± 4.49, n = 54
r = −0.33, ,n = 54
r = 0.08, ,n = 54
r = −0.04, ,n = 54
Partial blinks 6.37 ± 4.71, n = 54
r = 0.23, ,n = 54
r = 0.36,,n = 54
r = 0.27, ,n = 56
Rate of partial blinks 0.60 ± 0.36, n = 54
r = 0.37,,n = 54
r = 0.43,,n = 54
r = 0.44,,n = 56
LLT: lipid layer thickness. LLT average: average value of LLT during 19.1-second measurement. LLT max: maximum value of LLT during 19.1-second measurement. LLT min: minimum value of LLT during 19.1-second measurement. Blink: number of blinks during 19.1s. Partial blink: number of partial blinks during 19.1s. r: relative coefficient. P: significance. n: number.
