Yearly colored prescription contact lens

-0.50, -1.00, -1.50, -10.00, -2.00, -2.50, -3.00, -3.50, -4.00, -4.50, -5.00, -5.50, -6.00, -6.50, -7.00, -7.50, -8.00, -8.50, -9.00, -9.50