Fig. 5From: An imaging system integrating optical coherence tomography and interferometry for in vivo measurement of the thickness and dynamics of the tear filmCo-registration image of a TDF and b OCT of a precorneal tear film in vivo. The dashed line in Fig. 5a indicates the position of the OCT B-scan in b. The thickness of the lipid layer in a and that of tear film in b is 5.8 ± 0.7 µm and 77.3 ± 15.2 nm, respectivelyBack to article page