LENS THICKNESS COMPARISON

 
 
RIGHT
LEFT
PD =
SPH
EYE SIZE =
CYL
DEPTH =
AXIS
DBL =
 
 
 
ET/CT =
 

LENS SHAPE

lens shape image
Double click to change shape
animated lens thickness comparison chart showing lenses with different index numbers

RESULTS

 
 

THICKNESS (mm)

% THINNER

 
INDEX
RIGHT
LEFT
RIGHT
LEFT
 
  • Note: The calculator results are estimates only. For minus lens the result is for edge thickness. For plus lens the result is for centre thickness.
    For minus stock lens use CT = 1.10. For minus grind lens use CT = 1.90.