Dan Brown: round frames in translucent brown acetate Round frames in translucent brown acetate, with slim temples and metal hinge inserts. Suits oval, square and rectangular face shapes. Lenses & screen protection Non-prescription blue light lenses fitted as standard, to reduce eye strain in front of screens. Can be made to your prescription: just pick your lenses at checkout. What's in the box Workshop check: every pair is inspected and adjusted before shipping. Standard: EN ISO 12312-1-2013. Included: protective case and microfibre cloth. Browse our eyewear accessories.