Conversion of contact lens power to refraction power

Conversion of contact lens power to refraction power

Refraction power, eyeglasses power and contact lens power conversion tableRefraction power

Eyeglasses powerContact lens powerRefraction power

Eyeglasses powerContact lens powerContact lens power-3.75

-375-3.75(Less than -4.00 without conversion)-7.75

-775-7.00-4.00

-400-3.75-8.00

-800-7.25-4.25

-425-4.00-8.25

-825-7.50-4.50

- 450-4.25-8.50

-850-7.75-4.75

-475-4.50-8.75

-875-7.75-5.00

-500-4.75-9.00

-900-8.00-5.25

-525-5.00-9.25

-925-8.25-5.50

-550-5.00-9.50

-950-8.50-5.75

-575-5.25-9.75

- 975-8.75-6.00

-600-5.50-10.00

-1000-8.75-6.25

-625-5.75-10.25

-1025-9.00-6.50

-650-6.00-10.50

-1050-9.25-6.75

-675-6.25-10.75

-1075-9.50-7.00

-700-6.50-11.00

- 1100-9.75-7.25

-725-6.50-11.25

-1125-9.75-7.50

-750-6.75-11.50

-1150-10.00Note 1: If you have astigmatism within -1.00, you can add one-half of the astigmatism to the refraction power and convert it to the corresponding contact lens power. Example 1: -4.50 degrees of myopia -4.50 astigmatism -0.75 (from shallow) Example 2: -4.50 degrees of myopia -4.50 astigmatism -1.00 -4.75 degrees after conversion Note 2: If there is no corresponding contact lens after conversion of a myopia degree, you can choose the nearest power of the lower one.