The DOESAG.zpl macro posted on this site doesn't appear to accurately determine the diffractive sag.  
Anyone else think this is the case?
        
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            Hey Alex,
Where is that macro? I couldn't find it through the search.
    
                                    Where is that macro? I couldn't find it through the search.
            It can be found here: https://my.zemax.com/en-US/Knowledge-Base/kb-article/?ka=KA-01501
 
                
    
                                    
            Looks OK to me, at least in principle. What specifically do you not agree with?
                
    
                                    
            I believe it works only if system units are millimeters, not inches.  
 
                
    
                                    
            This Rx in inches.
 
                
    
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