Could a finger prick of blood help treat dry eye?

A 2015 study says it can and it was highlighted in the news this past week. The study involves a case report of three patients with dry eye syndrome and/or persistent epithelial defects. The patients used a diabetic lancet to obtain a small drop of blood from their finger and applied it to their lower fornix four times a day.  All patients showed improvement, one in as early as three days.

The authors state that although autologous serum has been an effective treatment for dry eye, there can be difficulty in obtaining it given the delays in production and the cost. They suggest that finger prick blood could be a cheaper and just as effective alternative. They are planning a larger randomized controlled study to assess the long term safety profile. (via)

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