<Dl> <Dd> Magnification = 1 (1 − (t n) P) ⋅ 1 (1 − h F) (\ displaystyle (\ textrm (Magnification)) = (\ frac (1) ((1 - ((\ frac (t) (n))) P))) \ cdot (\ frac (1) ((1 - hF)))) </Dd> </Dl> <Dd> Magnification = 1 (1 − (t n) P) ⋅ 1 (1 − h F) (\ displaystyle (\ textrm (Magnification)) = (\ frac (1) ((1 - ((\ frac (t) (n))) P))) \ cdot (\ frac (1) ((1 - hF)))) </Dd> <P> where: t = center thickness (in meters) n = refractive index P = front base curve h = vertex distance (in meters) F = back vertex power (essentially, the prescription for the lens) </P> <P> If the difference between the eyes is up to 3 diopters, iseikonic lenses can compensate . At a difference of 3 diopters the lenses would however be very visibly different - one lens would need to be at least 3mm thicker and have a base curve increased by 7.5 spheres . </P>

Is it common to have different vision in each eye