Demographics of Biometry

This is a complete analysis of the demographics of the biometry measurements of the human eye (using optical biometry) based on a very large series of over 80,000 eyes including all races and ages. It is an important update to the first such series of 7500 eyes by Hoffer (using immersion A-scan) more than 40 years ago. There are differences between the sexes (males have longer axial lengths and flatter corneas than females) and among racial groups (Asians have longer axial lengths). These data are important in regard to IOL power calculation and toric IOL implantation.