Low Vision Magnifiers are designed for optimal ergonomic comfort, and provide an extra wide field of view, combined with an extra deep focus range.
Magnification is 2.5x, 3.0x, 3.5x, 4.0x, 5.0x, 6.0x,
Working distance is 340mm(short), 420mm(regular), 500mm(long), 550mm(extra long),
Each working distance has different field of view,
Adjust interpupil distance.