Delhiites woke up to another smoggy morning with a thick layer of white blanket (smog) engulfing the city. The air quality index (AQI) at 6 am was recorded at 432, falling under the "severe" category", according to the Central Pollution Control Board (CPCB). Exposure to severe levels of air pollution can affect even healthy people and seriously impact those with existing diseases. Redness in the eyes, itchiness, and irritation are common. Dr Navin Sakhuja, Ophthalmologist shares tips on eye health.