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'Q' value
 
 
IN BRIEF

Asphericity of the cornea. May be negative (prolate shape) or positive (oblate shape).

 
DISCUSSION

Q-value has increasingly been talked about as the attention in laser eye surgery developments has shifted to how to prevent reduction in vision quality. It is thought by many that the prolate shape of the eye plays an important role in vision quality and therefore new programs have been developed to attempt to preserve the prolate shape.

 
Illustrations

 

 
RELATED ENTRIES

 

 
RELATED LASERMYEYE ARTICLES

 

 
EXTERNAL LINKS

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Update February 2005.