When It Came Time To Really Put Corrective Lenses To Work, A More Practical Eyeglass Had To Be Developed. During Ww2 The Military Needed A Frame That Would Not Only Fit Across All The Different Face Morphologies Of The Soldiers, But One That Would Allow For Much More Activity Without Lens Rotation. Thus The Pantoscopic 3 Was Born. In The Time Since Ww2 This Style Has Endured And Evolved From The Battlefield To Become A Common Staple Of Boardrooms, Ivy League Schools, And Silver Screens Alike. The Salt. Jefferson Continues To Build On That Heritage With Vintage Inspired Details Like A Classically Tailored Silhouette And A Subtle Keyhole That Provides A Universal Bridge Fit. Handcrafted In Japan Utilizing Functional Rivet Hinges, And The Highest Quality Japanese Acetate That Features Proprietary Colors Only Found At Salt.