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    Intraoperative aberrometry can help improve refractive results

    Aphakic and pseudophakic readings both provide useful information

    Take-home message: Intraoperative aberrometry aphakic and pseudophakic readings can be comparable with careful control of surgical variables. Both readings can be useful to predict postoperative manifest refraction.


    Brecksville, OH—With the members of the Baby Boomer generation fully front and center in ophthalmology practices seeking optimal vision following cataract surgery and implantation of premium IOLs, the demand for excellent outcomes is higher than ever. Ophthalmologists are relying on intraoperative aberrometry measurements to meet those demands.

    William F Wiley MDDr. Wiley“Aphakic intraoperative aberrometry measurements improve refractive results by increasing the accuracy of picking the sphere power compared to traditional biometry and uses proprietary modification of the vergence formula to help predict correct IOL placement. However, refractive surprises still occur. The aphakic measurement relies on the preoperative biometry (Ks and axial length) to determine IOL power,” said William Wiley, MD.

    In contrast, he explained, pseudophakic measurements do not rely on the preoperative biometry values, and therefore have the potential to be more predictive of the postoperative results than aphakic IOL predictions. In theory, the pseudophakic measurements measure refraction with the actual lens position and not the estimation.

    However, this measurement is dependent on careful control of surgical variables, such as the anterior or posterior positioning of the lens, the effect of tilt and lens position, IOP, and viscoelastic agent.

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