● Sphere: 32 lenses altogether (16 in each bar), 2 bars for each of concave (-) and convex (+)
● 0.50, 1.00, 1.50, 2.00, 2.50, 3.00, 3.50, 4.00, 5.00, 6.00, 7.00, 8.00, 9.00, 10.00, 12.00, 15.00
● Excellent for gaining quick retinoscopy results (particularly for children).