Yesterday we went to Dawlish Warren nature reserve for a walk along the sea shore. Though it was sunny, there was a strong and gusty wind which was making the sand blow about. There was also a high pollen count.

All the conditions a dry eye sufferer who is also allergic to pollen might dread.

But no problem, I put on my Ziena Kai at the start of the walk and I was the only one in our party to experience...