Ask any optical engineer why Lightweight Titanium Eyeglasses remain a benchmark, and the answer is rooted in physics. Titanium’s density sits around 4.5 g/cm³—roughly half that of stainless steel—yet its tensile strength surpasses most alloys used in eyewear. The result is a full-rim frame that tips the scale at 8–11 g, reducing pressure on the nose bridge and...