Conversion Chart
Glasses Degree Lens Degree
-4.00  -3.75 
-4.25  -4.00 
-4.50  -4.25 
-4.75  -4.50 
-5.00  -4.75 
-5.25  -4.75 
-5.50  -5.00 
-5.75  -5.25 
-6.00  -5.50 
                          -1.00=100 degrees        

When the degree of glasses is less than 400 degrees, the degree of contact lens is the same as the degree of glasses.