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Available Powers Sphere PowerCylinder PowerAxis+4.00D to -6.00D (0.25D steps)-0.75D, -1.25D, -1.75D10°, 20°, 70°, 80°, 90°, 100°, 110°, 160°, 170°, 180°-6.50D to -8.00D (0.50D steps)-0.75D, -1.25D, -1.75D10°, 20°, 70°, 80°, 90°, 100°, 110°, 160°, 170°, 180°