The Good-Lite two-paddle retinoscopy rack has one paddle with plus lenses and the other for minus. Optics on both are 0.5, 1.0, 1.5. 2.0, 2.5, 3.0, 3.5, 4.0, 5, 6, 7, 8, 9, 10, 12, and 15.
Lenses are 16 mm diameter, recessed to help prevent scratching. Lenses are glass for greater accuracy and durability. Includes protective case.