There are a number of factors that can cause your tears to evaporate too quickly. This includes environmental factors such as being exposed to forced hot air heat at home or at work, dry climates in general, air travel, reduced blinking from contact lens wear, reduced blinking from looking at a computer screen or reading for long periods of time, air pollution or even just blowing your hair dry. Tears may evaporate too quickly even if you suffer from minor low-grade eyelid inflammation. Your eyelids contain small tubular glands called Meibomian Glands. Even minor inflammation of the eyelids, or blepharitis or ocular rosacea can cause the Meibomian Glands to stop secreting their oily film. This oily film is required as an outer layer of the tear film to prevent evaporation. Without it, you will almost certainly experience quick evaporation of tears and dry eyes. This is especially noteworthy for perimenopausal women as it is believed that 75% of women in this age group have some presence of facial rosacea. This along with the general hormonal changes occurring during this time, make perimenopausal woman particularly susceptible to dry eyes.
In addition, your tear film may evaporate too quickly if the tears are not properly spread and replenished over the surface of the eye because of inadequate eyelid movement This may be due to improper or incomplete closure of your eyes during sleep, certain eye “bulging” conditions that may be related to thyroid problems, or a loss of tone or shape of the eyelids with age or as a result of trauma or inflammation, so that they turn in or turn out.