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 What do I need to provide for my prescription Swannies order? Do the custom prescription Swannies have the same blue light blocking lenses as the regular Swannies? Do you need pupillary distance for my prescription Swannies? When will I notice results? How many hours of sleep do you need? Comments 0 comments Please sign in to leave a comment.