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 (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]]). | 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]]). Getting 20/20 once is not necessarily an indication you are ready to reduce, it could just be a good day. Reducing too early leads to unnecessary struggle with excessive blur and eye strain that might slow or even stop your progress. With that consideration, it is a good idea to make sure the 20/20 holds for at least a week if not 2 before reducing. | ||
When introducing a [[normalized]] reduction you should perform a "[[zero diopter reset]]". | When introducing a [[normalized]] reduction you should perform a "[[zero diopter reset]]". | ||