I think estimation of near power is more strict than that of ADD power. Because later one ignore cylinder tolerance and axis tolerance for near power. ADD power only indicate different mean between distant power and near power. I wonder what standard you choose at your market.
Another question, why is axis so different between distant cylinder and near cylinder? Which one is real axis wearer need? Or Is axis changed when wearer see things from distance to near?
Thank you.
Best regards,
Delly
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