Benefits
Controlled humidity between 40% and 60% prevents the tear film from evaporating and prevents eye irritation and discomfort.
Fewer complaints
Controlled humidity protects the eyes from irritation and conjunctivitis.
Higher performance
Improved productivity, concentration and well-being with optimized humidity.
Employer of choice
Workplace health promotion makes employers attractive.
Prevent dry eyes with optimal humidity

Humidity reduces eye diseases
Air that is too dry can be very stressful for the eyes and often leads to symptoms such as swollen eyelids, redness, burning, increased sensitivity to light and inflammation of the conjunctiva. The main cause of this is insufficient lubrication of the surface of the eye with tear fluid. An intact tear film protects the surface of the eye from dust and particles.
Dry eye syndrome is one of the most common eye diseases. The condition, also known as Sicca-Syndrome, is exacerbated by external factors such as low humidity, dust and draughts, as these reduce the protective tear film on the eyes.
It is particularly important to ensure an optimal indoor climate when working frequently at a computer. A controlled humidity level of between 40% and 60% is ideal for protecting the function of the tear film and preventing dryness.
Dry eye syndrome is one of the most common eye diseases. The condition, also known as Sicca-Syndrome, is exacerbated by external factors such as low humidity, dust and draughts, as these reduce the protective tear film on the eyes.
It is particularly important to ensure an optimal indoor climate when working frequently at a computer. A controlled humidity level of between 40% and 60% is ideal for protecting the function of the tear film and preventing dryness.

Dry air weakens the tear film
Low humidity affects the production and quality of the tear film. Dry eyes are caused not only by a reduced quantity of tear fluid, but also by changes in its composition. The tear film consists of several layers: directly on the eye is a mucous layer that ensures that the watery main layer of the tear fluid does not evaporate or run off too quickly.
The goblet cells of the conjunctiva are responsible for producing the protective mucus. If the relative humidity drops below 30%, the cell density of these goblet cells decreases significantly. This results in less mucus being produced and jeopardises the stability of the watery part of the tear fluid.
Excessively low humidity therefore not only leads to accelerated evaporation of the tear film, but also to reduced mucus production.
The goblet cells of the conjunctiva are responsible for producing the protective mucus. If the relative humidity drops below 30%, the cell density of these goblet cells decreases significantly. This results in less mucus being produced and jeopardises the stability of the watery part of the tear fluid.
Excessively low humidity therefore not only leads to accelerated evaporation of the tear film, but also to reduced mucus production.

Contact lenses and humidity
Contact lenses react to the humidity in the air around them because they themselves have a certain water content, which varies between 30 and 80 percent depending on the type of lens. Lenses with a higher water content need to absorb moisture from their surroundings, otherwise they dry out more quickly. In dry air, contact lenses release more moisture, which also causes the tear film on the eye to dry out more quickly. This results in a shorter wearing time for the contact lenses and discomfort, such as scratching and burning in the eye.
Regulated humidity, ideally between 40% and 60%, helps contact lenses retain their moisture and reduces strain on the eye. Measures such as the use of humidifiers help to optimise the indoor climate and humidity for contact lens wearers.
Regulated humidity, ideally between 40% and 60%, helps contact lenses retain their moisture and reduces strain on the eye. Measures such as the use of humidifiers help to optimise the indoor climate and humidity for contact lens wearers.


Middle aqueous layer
The largest layer of the tear film is the Aqueous layer excreted from the Lacrimal gland. Insufficient humidity affects the thickness and function of the tear film.
Outer lipid layer
The outer Lipid layer is slightly oily, excreted from the Meibomian gland, lubricates the eye lid movement and inhibits evaporation of the Aqueous layer.
Inner mucous layer
The inner Mucous layer, excreted from the Conjunctival goblet cells, holds the tear film to the eye. If the humidity is too low, the goblet cells produce less mucus.
Preventive measures against dry eyes are beneficial in many industries and applications
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Frequently asked questions
Does dry air cause eye problems?
Why is humidity important for healthy eyes?
What is Office-Eye-Syndrome?
What are the symptoms of dry eyes?
Does dry air affect contact lens wear?
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