Effect of Blinking on Tear Volume After Instillation of Midviscosity Artificial Tears
To determine by optical coherence tomography (OCT) the effect of blinking on ocular surface tear volume after instillation of artificial tears.
Design
Experimental study.
Methods
Normal human eyes (n = 21) were imaged to obtain dimensions of the tear film and menisci during blinking. The imaging was carried out immediately and five minutes after the instillation of 35 μl midviscosity artificial tears (1.0% carboxymethylcellulose; Refresh Liquigel; Allergan, Irvine, California, USA). The exposed ocular surface area and the lid lengths were used to calculate the volumes.
Results
Immediately after the instillation, total tear volume was increased (P .05). During the blink ...
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