Table 2

Powers of IOL used in 461 ECCE procedures at Kikuyu hospital

Average powerNo biometryBiometry*
20.8721.79
<20D236.3%1010%
20–22D32790.6%5757%
>22D113.1%3333%
Total361100%100100%
  • χ2 = 85.7 p<0.001. *A-constant = 118.5.