Just curious about the -7.00, 9.5 , 4.65 ...etc
In singapore, the eye professionals only tell us 400 degrees ... 600 degrees or so
Anyone know how to convert 7.00 into singapore eye presciption ?
or is it like -7.00 = 700 degrees ?
thanks in advance.
appreciate it
yes 600 is -6.00
700 is -7.00