Active Focus: Prescribed -5.50, Can Read 20/20 with -4.00

The title of this post points to something interesting:  If you can read 20/20 with a -4.00 prescription (after a month or two of basic efforts) why did the optometrist prescribe you a -5.50?   … Continue reading Active Focus: Prescribed -5.50, Can Read 20/20 with -4.00