Glasses Size: 190 x 80 mm Lamp LED 3V/20mA Battery Case: 110 x 32 x 20 mm Convex Lens: 50 mm
Frenzel glasses are special glasses that can easily and conveniently test for dizziness. This is a safe and proven product widely used in hospitals in Korea. Frenzel glasses are special glasses with convex lenses that diagnose dizziness through eye movement and tremor when wearing the glasses and standing still, changing positions, or shaking the head. Do not use for children.
