Do blue light glasses work?
Blue light filtering lenses have not been shown to reliably reduce eye strain or prevent eye damage from screen use. Some people report that they feel more comfortable, and that is a legitimate reason to wear them, but it is not the same as a protective effect.
- Subject
- Screens
- Topic
- Blue light
- Kind of question
- Other questions
- Last reviewed
- 22 September 2026
In more detail
Where they are more firmly supported is in the evening, if the goal is to reduce the alerting effect of screens on sleep. That is a sleep question rather than an eye health one.
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Where this answer sits
It is one of 483 answers in the vision and eye health knowledge base, filed under Screens & digital eye strain in Blue light . The subject page carries the answers either side of it, and the hub is searchable.
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- Non-surgical option Contact lenses
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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.
- EyeSmart: eye health information for the public
Patient-facing material from the largest ophthalmology professional body, covering conditions, tests and treatments outside refractive surgery.
Used for Cross-checking patient-facing explanations of non-refractive eye conditions; Describing what tests such as dilation and OCT involve.
Link checked 23 September 2026