Finally, the opportunity for freedom from reading glasses and bifocals.
Until recently, life without reading glasses or bifocals was not an option for most cataract patients. You now have options. The AcrySof® ReSTOR® IOL is one excellent option for many people.
ReSTOR is a unique technological innovation that can provide you with quality vision throughout the entire visual spectrum - near through distance - with increased independence from reading glasses or bifocals!
How does the AcrySof® ReSTOR® IOL work?
As we perform daily activities such as reading, watching television or working at the computer, our eyes are constantly focusing on objects at varying distances - up close, far away and everything in-between. The ability to quickly change focus throughout this range of vision is called accommodation.
Unfortunately, this ability diminishes as we grow older, causing us to become dependent on bifocals or reading glasses. However, the AcrySof® ReSTOR® IOL was designed to provide quality near to distance vision by combining the strengths of apodized diffractive and refractive technologies. Similar technology has been used for years in microscopes and telescopes to improve image quality and has now been patented for use in intraocular lenses by Alcon.
Apodization is the gradual tapering of the diffractive steps from the centre to the outside edge of a lens to create a smooth transition of light between the distance, intermediate and near focal points. Diffraction involves the bending or spreading of light to multiple focal points as it passes through the lens. On the AcrySof® ReSTOR® IOL, the centre of the lens surface consists of an apodized diffractive optic. This means that the series of tiny steps in that centre area work together to focus light for near through distance vision.
Refractive involves the redirection of light passing through the lens, to focus on the retina. The refractive region of the AcrySof® ReSTOR® IOL bends light as it passes through the lens to a focal point on the retina. This outer ring of the AcrySof® ReSTOR® IOL surrounds the apodized diffractive region and is dedicated to focusing light for distance vision.