|One of the symptoms often described after flying is dry eyes, this is due to the dry atmosphere onboard the aircraft. The relative humidity in most air-conditioned buildings is between 40 and 70 per cent, which is ideal for comfort. On an aircraft, the relative humidity may be of the order of 20 per cent. High water content lenses may dry and distort more than those with lesser water content. This problem may be overcome with gas permeable lenses. Drinking excessive amounts of tea, coffee and alcohol can exacerbate dryness.|
Contact lens wearers may have to re-wet their lenses and should remove them prior to sleeping during the flight.
Passengers may carry small quantities of liquids, each of which must have a capacity not greater than 100ml, this includes contact lens solution. You can carry a contact lens case containing fresh lens solution in order that you may remove your lenses should you experience discomfort on the flight, so it is essential that you carry your spectacles in your hand luggage. Although it is perfectly safe to store spare lenses in hold luggage it is not adviseable lest the luggage does not appear at your destination.