Precision Profile Design is a special lens design used in multifocal contact lenses from Alcon Inc. It was introduced in 2009 and it is a combination of three lens design features:
- A bi-aspheric surface
- An adaptive minus power profile
- A center-near design
These three Precision Profile Design features work together with the goal to deliver clear vision and smooth transitions from near to intermediate to distance vision.
The aspheric front-surface design was introduced to enhance image quality and contrast. The aspheric back-surface supports lens centration and fit across a wide range of corneal curvatures. The adaptive minus-power profile minimizes aberrations and with additional minus-power at the periphery of the optic zone, the plus-powers can be further 'pushed' for distance vision. This helps to improve near vision without compromising distance vision and addresses one of the main challenges of multifocal contacts: To provide uninterrupted transitions from near to intermediate to distance.
Precision Profile Design and Alcon Lenses
While the first lens with Precision Profile Design was Air Optix Aqua Multifocal, Alcon expanded this successful design to other multifocal products including:
Specifically developed for presbyopic patients, Alcon Inc. also offers a multifocal version in its...