Hi. Progressive lenses contain three viewing areas: distance-, intermediate-, and near-vision - the distance vision area is near the top of the lens, the near vision area is at the bottom, and the intermediate vision area is in the middle. The clear viewing area is located in the central "corridor" of the lenses, so there can be a noticeable but expected blur when looking toward the edges of the lenses. Due to this design, and because there are slight differences between progressive lenses across brands, someone new to wearing progressive lenses may initially experience some difficulty adjusting to them; likewise, someone who is already accustomed to wearing one brand of progressive lenses may have some difficulty adjusting if they switch to a different brand, and they will find that it it will take some time to become accustomed to the new lenses. Despite the period of adaptation needed, we are happy to report that we do not receive a disproportionate number of complaints about our progressive lenses. However, we don't ever want to assume that needing time to adjust to the lenses is the only reason a customer could be having difficulty with their glasses; consequently, if you have recently purchased progressive lenses, and have problems seeing clearly through them, we encourage you to contact our Customer Service department at 1-800-211-2105. Doing so will give us an opportunity to address the issue and to offer you a proper resolution. Thank you for posting your question.