Intraocular Lens Implants (IOLs)
Cataracts form on the eye's natural lens. When the lens is removed, it is replaced with an artificial, acrylic lens implant, which is a very thin disk measuring approximately 1/4 inch in diameter. Without a lens implant, extremely thick eyeglasses would be required to see clearly. The lens is meant to last a lifetime. You will not feel the lens implant in your eye.
Monofocal IOLs correct vision only at one distance - near, distance, or intermediate. Patients with a monofocal IOL may need glasses for some or all distances.
Advanced technology lenses called Tecnis Multifocal lens or Tecnis Symfony extended range of vision lens are able to focus light at distance and near, increasing the chance of being able to drive and read without glasses.
Thanks to their sophisticated technology, Multifocal IOLs can help patients see at all distances with a reduced dependency on glasses and contact lenses.
There is now a multifocal lens available that has the ability to reduce astigmatism called the Tecnis Symfony Toric lens.
Toric Lenses for Astigmatism Correction
The front surface of the eye which covers the blue or brown iris is known as the cornea. In some people, the cornea is not perfectly round like a basketball, but more oval shaped like a football. This oval shape is known as astigmatism and prevents the eye from focusing on a particular object clearly. It is necessary to wear glasses with the astigmatism prescription to see clearly.
When a cataract is removed, a lens implant is placed in the eye. Unlike traditional monofocal lens implants, the Toric lens implant for astigmatism has a custom prescription shape which corrects or significantly reduces your astigmatism. The design of the Toric lens implant makes it possible to reduce or eliminate astigmatism and significantly improve your vision when you are not wearing glasses. If you have astigmatism and do not get a Toric lens, you will be more dependent on glasses.