I'm ordering contacts offline and want to know if I should get 1.61 or 1.67 index lens? My prescription is: OD: -3.50 (SPH), -2.00 (CYL?
Added (1). I'm ordering contacts offline and want to know if I should get 1.61 or 1.67 index lens? My prescription is:
OD: -3.50 (SPH), -2.00 (CYL), 165 (AXIS)
OS: -6.00 (SPH) -1.75 (CYL), 008 (AXIS)
Any help would be appreciated!
Read more: I'm ordering contacts offline and want to know if I should get 1.61 or 1.67 index lens? My prescription is: OD: -3.50 (SPH), -2.00 (CYL?