Posted By Patrick Teyhan Colleagues, I work in an office where the humidity levels can drop below 28%. Whilst I am aware of the problems for those who wear contact lenses i.e. dry scratchy eyes, is anyone aware of any other health concerns from working in an environment as described. I am aware of the target comfort criteria for the office working environment which between 40% and 70% Humidity and I am seeking to get the levels improved. Many thanks in advance for your participation