Loupes PREMIUM The new and improved Loupes from LW Scientific feature more ergonomic, lightweight sport frames, as well as higher-resolution, scratch-resistant, anti-glare glass optics. Using loupes reduces eyestrain and fatigue and improves quality and patient care. The flip-up optics and QUICK-WIDTH adjustment makes these loupes more comfortable to wear and easy to share. The 2.5x loupes are recommended for most users and especially beginners, because the wide field of view and huge 3-D depth of focus makes them easy to work under. The economical price is affordable for any dental lab technician, dental hygienist, electronics QC inspector, veterinary technician, or jewelry maker, and the quality is up to the standards of surgeons and doctors. VARIABLE Just like a zoom lens on a camera, the Variable Loupes allow the user to work close up with higher magnification, or far away with lower magnification and a wider field, as well as for diopter adjustments between left and right eyes. Perfect for multi-application users. CLIP-ON Clip-on loupes work on most prescription glasses. Choose from multiple options.