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 flexes to focus on objects at varying distances. The AcrySof® ReSTOR® IOL was designed to provide a complete range of vision independent of the ciliary muscle body. 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) 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 cataract patients a better chance of leaving glasses behind, because it is the only one with patented¹ 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 near and distant focal points, regardless of the lighting situation.
The apodized diffractive optic of the AcrySof® ReSTOR® IOL is designed to improve image quality while minimizing visual disturbances compared to prior multifocal technologies². The result is an increased range of quality vision that delivers a high level of spectacle freedom.³
+4.0 D add power for quality near vision
To facilitate quality near vision, the AcrySof® ReSTOR® IOL incorporates a +4.0 diopter correction at the lenticular plane. This correlates to approximately +3.2 D at the spectacle plane.
- U.S. Patent No. 5,699,142
- AcrySof® ReSTOR® IOL clinical trial data as submitted to the FDA.
- Based on clinical study results submitted to FDA (models SA60D3 and MA60D3). Bilateral cataract surgery. See package insert.
- 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.