Hydromoor lubricates the eyes and is recommended for the relief of mild to moderate dry eyes. Hydromoor 0. 3% Hypromellose eye drops is a tried and trusted treatment for the relief of dry eyes. Hypromellose has been recommended for years to replace tears by ophthalmologists, GP’s and pharmacists. Hydromoor is phosphate and preservative free, which means it is less likely to cause additional irritation and can be used by those who are sensitive to the preservatives in other kinds of eye drops. Hydromoor can also be used by the wearers of all types of contact lenses.