LENS IMPLANTS & IOL

When the lens of the eye is clouded by a cataract, an artificial lens made of plastic, silicone, acrylic or other material is implanted inside the eye, replacing the damaged lens and restoring vision. Likewise, an early cataract surgery can be done using the same method to treat presbyopia as a form of refractive surgery to change the eye’s optical power.

The intraocular lens (IOL) that is implanted in the eye comes in two varieties: Multifocal and Monofocal intraocular lenses, both of which are stable, reliable options for improving vision. Monofocal IOLs provide a set focal point, usually for distance vision and Multifocal IOLs provide patients with multiple-focused vision at far and reading distance.

MONOFOCAL IOLs

As monofocal IOLs only correct one range of vision, a method called monovision is used as a treatment for the correction of presbyopia. Monovision is a technique the surgeon may choose to perform that involves inserting an IOL in one eye for near vision and an IOL in the other eye for distance vision. This technique increases the depth of field in both eyes, enabling far, intermediate and near vision without glasses but requires adaptation, since each eye will then be oriented towards different needs.

MULTIFOCAL IOLs

Multifocal lenses works like a progressive lens, providing excellent quality vision for near, intermediate and distance which in turn offers the possibility of seeing well at more than one distance, without glasses or contacts.

Early cataract surgery can be done with a small incision and a foldable IOL can be implanted in the lens capsule. The size of this incision ranges from 2.8 – 3.5 mm and does not require sutures for wound closure. Once implanted, the IOL unfolds and settles in its original shape.

  • Benefits of a smaller incision include:
  • Less trauma to the eye
  • Little discomfort during or after the surgery
  • Often do not require stitches
  • Can aid in reducing astigmatism and provide better vision
  • Will usually provide a faster postoperative recovery period and quicker return to normal activity

Regardless of which option is chosen, presbyopia does progress over time and you may require an increased presbyopia prescription. There is also a possibility that you may still need the usage of glasses to aid in reading for more comfort. Regular eye exams will ensure that your prescription is always up to date and provide you with the best vision possible.