EP: Advanced IOL Optics


Recorded at ASCRS, Dr Ben LaHood (Australia) and Dr Damien Gatinel (France) dive deeply into advanced IOL optics and discuss the bench testing Gatinel has performed across a large number of the IOLs currently on the market. The results of this work empower ophthalmic surgeons to better predict the performance of different IOLs based on key factors such as asphericity, aspheric aberration (positive or negative), thickness, multifocality, aperture effect, lens placement and more.


Dr Ben LaHood (host)
Dr Ben LaHood, refractive cataract and laser vision correction surgeon from Australia, has gained international recognition for his extensive research on astigmatism management and biometry, which is regularly shared around the world. Additionally, Dr Ben LaHood is the host of two widely popular ophthalmology-themed podcasts.

Dr Damien Gatinel (guest)
Dr Damien Gatinel is among the world’s leading experts in refractive surgery and head of the Department of Refractive and Anterior Segment Surgery at the Rothschild Foundation Hospital in Paris, France. He is the author of more than 170 publications in peer-reviewed journals and also the owner of several patents for IOLs.

Key Takeaways:

  • The importance of higher order aberrations: Dr Gatinel emphasises the significance of understanding higher order aberrations, as they have a significant impact on the quality of vision and depth of focus. He and his team diligently analyse and classify IOLs as part of their ongoing optical bench testing program. By studying these factors, they aim to improve their understanding of IOL performance and enhance patient outcomes.
  • Managing expectations with new IOLs: Dr Gatinel, recommends underpromising to patients when using innovative products, particularly for individuals with more advanced cataracts. This approach allows for a comprehensive evaluation of how the expected results correspond to the actual reported outcomes, ensuring patient satisfaction and informed decision-making.
  • Attending to patient needs: Dr LaHood and Dr Gatinel highlight the importance of understanding patients’ lifestyles to provide personalised recommendations for the most suitable IOL. They stress the need to consider a wide range of near vision tasks beyond just reading habits, such as digital device use. This comprehensive understanding enables more tailored and effective IOL recommendations.
  • Dr Damien Gatinel’s clinical study on RayOne EMV: Dr Gatinel discusses his evaluation of the RayOne EMV lens on the optical bench, emphasising its advantageous positive spherical aberration. He highlights that this characteristic provides significant benefits for patient outcomes by eliminating visual disturbances such as halos and glare.
  • The advantages of positive spherical aberration: Dr Gatinel concludes that lenses with positive spherical aberration, like RayOne EMV, offer benefits when targeting a slightly hyperopic correction. This extended depth of focus is particularly advantageous for patients with larger pupils, commonly seen in younger individuals.
  • The future of optical technology: Dr Gatinel predicts that optical advancements will increasingly focus on customising IOLs to cater to each patient’s unique characteristics, such as cornea properties, pupil diameter, lens placement, and astigmatism. This personalised approach will enable a more precise match between the IOL and the individual patient. Dr Gatinel believes that there is also a possibility of transitioning from pseudo accommodation to true accommodation, which would significantly transform the landscape of IOLs.

Connect with Dr Ben LaHood on social:
Dr Ben LaHood (@drbenlahood) | Instagram
Ben LaHood | LinkedIn

Connect with Dr Damien Gatinel on social:
Dr Damien Gatinel | LinkedIn