IOL calculation

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Author:
mordickman
ID:
212210
Filename:
IOL calculation
Updated:
2013-04-08 16:55:04
Tags:
IOL
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Description:
IOL calculation
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  1. IOL calculation formulas based on 6 parameters
  2. The only parameter which cannot be directly measured is the ELP - effctive lens position
  3. First order formulas estimated ELP using AL alone however the relationship between AL and ELP is not linear. Only 10% of large eyes have large ACD and 20% of small eyes have small ACD.
  4. Second order formulas took both AL and K into consideration but did not perform sig better
  5. For normal eyes SRK/T Holladay I Hoffer Q are OK For very long or short eyes 7 parameters need to be taken into consideration (AL, K, PreopRef, horizontal corneal diameter, age - dt lens changes) = Holladay 2

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