Specification:

1. Spheres lens: 8 pairs each of concave and convex

2. Cylinders lens: 4 pairs each of concave and convex

Details:

1. Sphere: 8 pairs each of concave and convex trial lenses

0.25D

0.50D to 2.00D in 0.50 steps

3.00D to 5.00D in 1.00 steps

2. Cylinders: 4 pairs each of concave and convex trial lenses

0.25D, 0.50D, 1.00D, 2.00D