What Are The Different Types of Intraocular Lenses?

As the natural lens plays a vital role in focusing light for clear vision, artificial lens implantation at the time of cataract surgery is necessary to yield the best visual results. Because the implant is placed in or near the original position of the removed natural lens, vision is restored, and peripheral vision, depth perception, and image size are not affected. Artificial lenses usually remain permanently in place, require no maintenance or handling, and are neither felt by the patient nor noticed by others. There are a variety of intraocular lens styles available for implantation, including monofocal, toric, and multifocal intraocular lenses.

Below is an animation video of cataract surgery using the "AcrySof ReSTOR IOL" (Intraocular Lenses), provided by Alcon Laboratories, Inc.

1. Monofocal lens: These lenses are the most commonly implanted lenses today. They have equal power in all regions of the lens and can provide high-quality distance vision, usually with only a light pair of spectacles. Monofocal lenses do not correct astigmatism, an irregular oblong corneal shape that can distort vision at all distances, and require corrective lenses for all near tasks, such as reading or writing.

2. Toric lens: Toric lenses have more power in one specific region in the lens to correct astigmatism as well as distance vision for many individuals. Due to the difference in lens power in different areas, the correction of astigmatism with a toric lens requires that the lens be positioned in a very specific configuration. While toric lenses can improve distance vision and astigmatism, they still require corrective lenses for all near tasks, such as reading or writing.

Click here to view an image after cataract surgery with a Standard or Toric Lens Implant. 

Click here to view an image after cataract surgery with a ReStor Multifocal Lens Implant.

3. Multifocal lens: Multifocal intraocular lenses are one of the latest advancements in lens technology. These lenses have a variety of regions with different power that allows some individuals to see at a variety of distances, including distance, intermediate, and near. While promising, multifocal lenses are not for everyone. They can cause significantly more glare than monofocal or toric lenses. Multifocal lenses cannot correct astigmatism, and some patients still require spectacles or contacts for clearest vision.

Watch below to view the ReSTOR commercial, provided by Alcon Laboratories, Inc.

INFINITI® Vision System

The INFINITI® Vision System allows our physicians to provide patients with customized cataract surgery. This approach provides surgeons increased efficiency and the ability to customize cataract lens removal to each patient. The system's OZIL® Torsional Handpiece delivers side-to-side, oscillating ultrasonic movement, enhancing surgeon control during surgery. Increased surgical control delivers greater potential for obtaining better surgical outcomes and safety than with traditional cataract removal technologies. This approach also allows our surgeons to perform micro-incisional cataract removal, to maximize healing time.