Alcon® AcrySof® ReSTOR® IOL Apodized Diffractive Optics
How the AcrySof®ReSTOR® IOL Works
Apodized diffractive optics for a full range of vision
In the healthy eye, the lens changes shape to focus on objects at varying distances. The AcrySof® ReSTOR® IOL was designed to provide a complete range of vision independent of the ciliary body muscle. To achieve this, the AcrySof® ReSTOR® IOL combines the functions of both apodized diffractive and refractive regions.
The apodized diffractive optics are found within the central 3.6 mm optic zone of the lens. This area comprises 12 concentric steps of gradually decreasing (1.3-0.2 microns)1 step heights that allocate energy based on lighting conditions and activity, creating a full range of quality vision – near to distant.
The refractive region of the optic surrounds the apodized diffractive region. This area directs light to a distance focal point for larger pupil diameter, and is dedicated to distance vision.
Apodization for minimal visual disturbances
The AcrySof® ReSTOR® IOL gives patients a better chance of eliminating their requirement for glasses because it is the only lens with patented apodized diffractive technology.
Apodization is the gradual reduction or blending of diffractive step heights. This unique technology optimally distributes the appropriate amount of light to
the near and distant focal points.
The apodized diffractive optic of the AcrySof® ReSTOR® IOL is designed to improve image quality while minimizing visual disturbances. The result is an increased range of quality vision that delivers a high level of spectacle freedom.
+4.0 D add power for quality near vision
To facilitate quality near vision, the AcrySof® ReSTOR® IOL incorporates a +4.0 D (diopter) correction at the lenticular plane. This correlates to approximately +3.2 D at the spectacle plane.
- AcrySof® ReSTOR® IOL step heights are smaller than a human hair or a red blood cell. For example, the thickness of a human hair is equal to 60 microns, and a red blood cell is equal to 7 microns.
