Dry eye

What is this?

Dry eye develops when the eyes do not make enough tears, the tears evaporate too quickly, or the tear film is not stable enough.

Key points

• Burning, gritty or dry sensations and fluctuating blur are common.
• Screen use, contact lenses, age, environment and some health factors can contribute.
• Symptoms may vary from day to day and with the environment.

What may be assessed?

Assessment may look at the eyelids, ocular surface and tear film and, when needed, tear quantity or stability. Contact-lens fit and wear may also be relevant.

What happens next?

Management depends on the cause and severity. Persistent pain, marked redness, light sensitivity or a clear reduction in vision needs professional assessment.