Not all, but most customers tend to be in one of two groups. The "ah-ha" group that feels immediate relief or the more subtle group that observes symptom changes over 30 days or so. 

Most customers experience no adjustment period with Axon Eyewear and feel immediate relief. However, if you experience discomfort while wearing them at first, it may be a good idea to wear them for only one hour the first day, two hours the second day, three hours the third day, and so on, until you feel more comfortable with them. 
There are no known side effects from wearing the filter.  If you find that the discomfort does not go away, please return them to us.  We offer a full refund or exchange credit for glasses returned in new condition within 60 days of purchase.

Some customers can selectively wear their eyeglasses when shopping or working on the computer.  Other customers need to wear them all day every day.  A small group of customers report no relief (or can even experience new symptoms) when the eye-wear is taken on and off frequently or worn sporadically.  

Our return policy is lenient so that you can take time to make your own observations and wear them for optimum efficacy for your individual needs.  Please let me know if you have any other questions or need an extension.