Increasing ambient humidity reduces tear evaporation. Particularly important in heated/air-conditioned indoor environments and during winter months.
| Practice | Description |
|---|---|
| Cool-mist humidifiers | Bedroom and home-office units targeting 40–60% RH |
| Whole-room humidifiers | Larger-capacity systems for open-plan spaces |
| Indoor plants / water dishes | Passive humidification with minimal maintenance |