Can a glasses prescription be inaccurate?
A prescription can differ between tests, partly because refraction depends on your responses during the test and partly because the eye’s focusing changes through the day, especially when tired or dry.
- Subject
- Glasses & contacts
- Topic
- Glasses
- Kind of question
- Can I…
- Procedures
- Glasses
- Last reviewed
- 22 September 2026
In more detail
If new glasses feel wrong after a couple of weeks, the answer is usually a recheck rather than persistence. That is a normal part of getting it right, not a complaint.
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It is one of 483 answers in the vision and eye health knowledge base, filed under Glasses & contact lenses in Glasses . The subject page carries the answers either side of it, and the hub is searchable.
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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.