Optivisor, 3 1/2x Magnification at 4"

OptiVisor is a precision binocular headband magnifier which permits unrestricted user efficiency leaving both hands free, while reducing eye strain allowing three dimensional vision. It can be worn over prescription eyeglasses. Equipped withthese unique features: Optical glass prismatic lenses. Ground and polished to precision optical standards. Bevel edged and mounted in interchangeable plastic frame. Adjustable pivots allow the visor to be tilted out of the way when not in use, and at your fingertips when magnification is needed.Adjustable headband conforms to fit all head sizes. Fabricated from a special blend of lightweight material. Comfortable when worn for long periods of time. High impact visor is tough, durable, and always new in appearance. Genuine leather comfort band is padded with orthopedic felt to add comfort. Magnifies 2.5 times at 8". Optivisor is perfect for eye exams, (i.e. corneal foreign body, distichiasis). Varying magnifications and focal lengths available.