ABSTRACT
It is necessary for every ophthalmologist who is working with intraocular lenses to know how to calculate the power of the IOL.
AXIAL LENGTH MEASUREMENT
For IOL implantation, the ultrasonic method affords the best way to calculate the axial length and achieves the desired postoperative refraction. The instruments available to make these measurements are of two basic types:
i. instruments with rigid probe tips, and ii. instruments with distensible tips or with water baths.
