This compact device is lightweight, with a user-friendly LDC touch screen, a thermal printer and immersion and contact modes. Its got multiple IOL power calculations and can connect to PCs. The A-Scan has six IOL formulas, a 10MHz frequency probe, has ±0.1mm clinical accuracy and 14.0-46.0mm axial length. The pachymeter is a 20MHz frequency probe, has ±10microns clinical accuracy, and 125-1000 microns range.