Difference between revisions of Guide:Reducing normalized

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-In general, you only want to reduce '''0.25 diopters from a full, 20/20 prescription'''. The 20/20 standard indicates that you can consistently read the 20 foot or 6 meter line on the [[Snellen chart]] from that distance in reasonably good indoor lighting. Also when introducing a [[normalized]] reduction you should perform a "[[zero diopter reset]]".
+In general, you only want to reduce '''0.25 diopters from a full, 20/20 prescription'''. The 20/20 standard indicates that you can consistently read the 20 foot or 6 meter line (half or better correct) on the [[Snellen chart]] from that distance in reasonably good indoor lighting without [[active focus]]. You would do well to wait for the non dominant eye to be at this standard as well, (see [[ocular dominance]]).
+When introducing a [[normalized]] reduction you should perform a "[[zero diopter reset]]".
+It is a good idea to keep the full correction (your previous normz) handy for night driving; at least for the first stretch of time in your new reduction.
 == See also ==