Angle alpha, angle kappa play role in good IOL centration

For cataract surgery, when we implant the IOL, the closer the optic is to the center of vision, the better it is for visual outcomes.
This is particularly true for IOLs that have diffractive rings such as in trifocal and bifocal IOLs, but also for newer extended depth of field IOLs that have central elements designed to alter the aberration profile. The optical zones of these IOLs perform well when they are centered in the eye.
When it comes to centration of an IOL, we must first define what we (Read more...)

Full Story →