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PurposeTo investigate the changes in the tear flow velocities caused by ageing.
MethodsNinety‐nine subjects (41 men, mean age 48.3 ± 20.7 years) were recruited from the Department of Ophthalmology of the Ehime University Hospital. None of the subjects had serious abnormalities of the external surface of the eye. The Krehbiel flow of tears was determined by 40‐μm polymethylmethacrylate (PMMA) beads...
PurposeTo describe a new method of measuring early phase tear clearance by anterior segment optical coherence tomography (AS‐OCT).
MethodsSixty normal subjects were divided into a young group (30 subjects; 29.6 ± 7.2 years) and an elder group (30 subjects; 71.4 ± 10.8 years). AS‐OCT (CASIA SS‐1000, Tomey, Japan) with customized software was used to record the tear meniscus at the centre of the lower...
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