Where are Swannies prescription lenses made? Sarah A September 03, 2018 22:09 Updated Follow Our custom prescription lenses are made in California by a leading optical laboratory. Related articles Do the custom prescription Swannies have the same blue light blocking lenses as the regular Swannies? What do I need to provide for my prescription Swannies order? Do you need pupillary distance for my prescription Swannies? When will I notice results? Comments 0 comments Please sign in to leave a comment.