My perscription is Right -1 -1 (cyl) 7 (axis)
left -1 -1 (cyl) 170 (axis)
I heard there is a formula i can use, devide the cyl by 2 and add that to the power so i can just get -1.5PWR lenses. Would that work? Are there any risks in doing that?
Added (1). I am not taking medical advice, just asking if there is any merit for this formula i heard of in principal. Just asking as i know there are several opticians working here and optometrists in my country have an interest in selling toric lenses as they make much higher profits on them.
См. статью: I have astigmatism, can i use the regular contact lenses?