First Author: F.Carones ITALY
Co Author(s):
Purpose:
To describe a newly developed multifocal IOL with a +2.5 D add power that is intended to optimize performance at intermediate and far distances for patients in need of a lens for distant dominant lifestyles.
Setting:
Carones Ophthalmology Center, Milan Italy and Alcon Laboratories, Fort Worth TX USA
Methods:
The +2.5 D add IOL differs from the +3.0 D add lens relative to energy distribution, apodized diffractive zone, and amount of IOL asphericity. The central zone of the lens was changed from diffractive to refractive. Energy distribution, at the 3.0 mm IOL plane, was assessed for the near and distance foci.
Results:
For a 3 mm pupil at the IOL plane, the +2.5 D IOL directs 69.4% of energy to the distance focus and 18.0% to the near focus; whereas, the +3.0 D IOL directs 59.0% to distance and 25.5% to the near focus. The apodized diffractive zone for the +2.5 D IOL contains 7 graduated steps in a 3.4 mm diameter, compared with the +3.0 D IOL that has 9 graduated steps within a 3.6 mm diameter. The aspheric component of the +2.5 D IOL (center refractive) is -0.2 micron, while the +3.0 D IOL (center diffractive) has -0.1 micron of asphericity.
Conclusions:
An aspheric apodized diffractive multifocal IOL has been developed with a +2.5 D add power, which is intended to provide potential improvements in optical performance at intermediate and far distances. FINANCIAL DISCLOSURE?: ... receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, ... travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented
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