No CET Points
Tear ferning – Christine Purslow & Helen Tilley (17:29)
The pre-ocular tear film (POTF) is an important measure of the health of the surface of the eye. There are a number of pre-existing techniques for the assessment of the POTF, and one of the less well-known ones is the tear ferning test. This differs from other methods as it evaluates the composition of tears. The reasons for the different patterns of crystallization and ‘ferning’ that result are not currently fully understood, but research in the area is ongoing. In this interview, Helen Tilly talks to Dr Christine Purslow about tear ferning and its application in research and clinical diagnosis.
First published in DOCET OQ82 (2012).