Comparison of Two Toric IOL Calculation Methods

Table 6

Calculation of typical variables in vector analysis.

	Correction index	Angle of error (°)	Index of success	Flattening index
All patients; ()	0.97	2.21	0.56	0.76
WTR; ()	1.00	7.41	0.48	0.84
ATR; ()	0.69	−9.11	0.61	0.52

Correction index: >1.0 = overcorrection; <1.0 = undercorrection; Angle of error: between the axis of TIA and TSIA (“+” = counterclockwise; “−”=clockwise). Index of success is obtained by dividing DV by TIA. Preferably = 0. Flattening index is obtained by dividing FE by TIA. Preferably = 1.0.