Ten Pearls for Multifocal IOL
1. Science behind Multifocal Intraocular Lens (MFIOL) Multifocal intraocular lenses are IOLs which can separate incoming light into two or more foci, thus resulting in multiple coexisting retinal images. At any given point, only one of the images (distance, intermediate or near) is the sharpest, and hence selected by the brain for visualisation. This concept is known as simultaneous vision. The visual system in any mammal is not known to be multifocal, hence the implantation of these IOLs initiate a process of neuroadaptation in the recipient’s brain, and its best effect is seen only after some days to weeks. The splitting of light to form multiple images leads to loss of contrast for each image. However, despite these limitations, MFIOLs continue to be one of the best technologies to provide spectacle independence for all distances after cataract surgery. 2. Types of MFIOL MFIOL can be classified in two ways: Based on focality or the number of foci or images created by the lens: Tradi
Dr. Partha Biswas · Dr. Sneha Batra