ELECTRONIC	w   w   w dot j o u r n a l o f r e f r a c t i v e s u r g e r y dot c o m   s l a s h   p r e p r i n t dot a   s   p	w   w   w dot j o u r n a l o f r e f r a c t i v e s u r g e r y dot c o m   s l a s h   p r e p r i n t dot a   s   p	1