Includes all essential lens types such as sph, cyl, and lenses, providing versatile option for accurate refraction and visibilities correction Ideal for optometry clinics, training institutions, and visibilities correction studies, offering a practical tool for various eye care needs Designed for optometrists and eye care professional, reliably and precise results in visibilities testing and adjustments Measures 5.1x3.6cm, making it easy to carry and handle during eye examinations or optometry training Featuring a silver metal rim with glass lenses, ensuring long lasting and professional optically clear for precise visibilities testing, Manufacturer: Mekalero