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 30 days of purchase.