Hi All,
I am looking for a 1.67 index lap tool conversion chart from either 1.50 or 1.53 index? Any help would be appreciated.
Thanks
Hi All,
I am looking for a 1.67 index lap tool conversion chart from either 1.50 or 1.53 index? Any help would be appreciated.
Thanks
Multiply your base and cross by the ratio 0.67/0.53 or 0.67/0.50, make your own chart using an excel sheet with these formulas pluged into it, you can round to the nearest 1/4, 1/8, or 1/10th diopter in excel using
=Round($cell*400, -2)/400
=Round($cell*800, -2)/800
=Round($cell*1000, -2)/1000
1st* HTML5 Tracer Software
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Excel sheet in german, but easy to translate.
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