To prevent keratoconjunctivitis sicca (dry eye syndrome), attention must be paid to reducing individual risk factors.
Behavioral risk factors
- Diet
- Micronutrient deficiency (vital substances) – see Prevention with micronutrients.
- Consumption of stimulants
- Alcohol (tear film break-up time↓ (beak up time, BUT), tear film osmolarity↑).
- Tobacco (passive smoking)
- Wearing contact lenses
- Working at the computer screen (screen work)
- Intensive television
Environmental pollution – intoxications (poisonings)
- Car fan
- Low humidity, which means dry indoor air due to overheated rooms, underfloor heating, air conditioning, etc.
- Ozone, for example, from copiers and printers.
- Insufficient or incorrect lighting
- Cigarette smoke
- Environmental pollution (e.g. dust)
