Can dehydration cause dry eyes?
Dehydration can contribute to dry eye symptoms, since the tear film is mostly water, and it usually acts alongside other factors rather than on its own.
- Subject
- Eye health
- Topic
- General health & the eye
- Kind of question
- Other questions
- Last reviewed
- 22 September 2026
In more detail
That last point matters in a climate like the UAE’s, where air conditioning, outdoor heat and low humidity already place demands on the tear film.
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It is one of 483 answers in the vision and eye health knowledge base, filed under Everyday eye health in General health & the eye . The subject page carries the answers either side of it, and the hub is searchable.
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- Condition Dry eye
This information is for educational purposes and does not replace an examination by a qualified eye-care professional.
General answers cannot tell you what is happening in your own eyes. Only an examination by a qualified ophthalmologist can do that.
Sources & further reading
We prefer primary sources. Where a claim comes from a manufacturer, a single study or a regulator, it is labelled as such below.
- Eye Health Information
Condition-by-condition eye health information from a US government research institute, written for patients rather than for clinicians.
Used for Plain-language explanations of eye conditions and their symptoms; Healthy vision and screening guidance.
Link checked 23 September 2026