ADVANCED IOL POWER CALCULATIONS Jack T ... - ascrs 2012

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ADVANCED IOL CALCULATIONS 2012Vergence Formula1336 1336IOLALELP1336ELP1000K1000DPostRx VE L PEffective Lens Position• Distance from cornealvertex to principal plane ofthin IOL (no thickness)• Same as ACD, but avoidsconfusion with anatomyPrediction of E L P 26 mm35 eyes = normalJACK T. HOLLADAY, MD, MSEE, FACS Page 2 of 19
ADVANCED IOL CALCULATIONS 2012Measurements taken forPredictors of ELP Axial Length Average K Horizontal WTW ACD LT Pre-opRefraction AgeHWTW GaugeHorizontal Corneal DiameterASICO # AE ASICO # AE Normal EyesShort Eyes ( < 21 mm)100080# of Ca ases8006004002000N = 82496%2% 2%Small Normal LargeAnterior Segment Size# of Ca ases604020080%N = 9320%0%Small Normal LargeAnterior Segment SizeJACK T. HOLLADAY, MD, MSEE, FACS Page 3 of 19
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ADVANCED IOL POWER CALCULATIONS Jack T ... - ascrs 2012

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