New 10X Triplet Round Loupe 18mm. This is a new 10X round eye loupe. It has a large 18 mm viewing area. It has a quality lens for extra sharpness and clarity. The lens is color-corrected and spherically corrected. It comes with a quality case. The 10X lens is a triplet for good depth of field and minimal glare. The focal distance is 1" (25 mm).