July 2018
Volume 59, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2018
Comparison of the refractive error measured for the trifocal intra-ocular lens AcrySof® IQ PanOptix™ using two types of biometry.
Author Affiliations & Notes
  • Alejandro Sanchez-Hoil
    Asociacion Para Evitar la Ceguera en Mexico, Merida, Mexico
  • Jennifer Montoya-Silva
    Asociacion Para Evitar la Ceguera en Mexico, Merida, Mexico
  • Erika Fernandez-Muñoz
    Asociacion Para Evitar la Ceguera en Mexico, Merida, Mexico
  • Bertha Garibay-Velazquez
    Asociacion Para Evitar la Ceguera en Mexico, Merida, Mexico
  • Footnotes
    Commercial Relationships   Alejandro Sanchez-Hoil, None; Jennifer Montoya-Silva, None; Erika Fernandez-Muñoz, None; Bertha Garibay-Velazquez, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science July 2018, Vol.59, 2213. doi:
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      Alejandro Sanchez-Hoil, Jennifer Montoya-Silva, Erika Fernandez-Muñoz, Bertha Garibay-Velazquez; Comparison of the refractive error measured for the trifocal intra-ocular lens AcrySof® IQ PanOptix™ using two types of biometry.. Invest. Ophthalmol. Vis. Sci. 2018;59(9):2213.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : Cataract surgery has evolved in an accelerated way. Every manufacturer establishes a constant for each IOL for the power calculation. In this study, we compared the postoperative refractive results measured after the implant of the AcrySof® IQ PanOptix™ IOL through partial optical coherence interferometry vs immersion ultrasound.

Methods : We performed an 8 months long randomized controlled trial which included 24 eyes of patients from the "Asociación para Evitar la Ceguera en México" candidates to phacoemulsification and implantation of AcrySof® IQ PanOptix™ IOL. They were divided into 2 groups: In Group A power calculation was made by partial optical coherence interferometry, in Group B, immersion ultrasound was used. We used the SRK-T formula for both. Standard postoperative care was followed, 4 weeks after surgery, subjective refraction was performed and the refractive error was calculated. We used the Student T test for the variables with a normal distribution and Mann-Whitney U test for those without a normal one. Value of p<0.05 was considered statistically significant.

Results : The mean age was 69.4(± 8.6) for both groups. Axial length by partial optical coherence interferometry was 22.94mm(±0.73), by immersion ultrasound 22.99 mm(±0.74); calculated refraction with partial optical coherence interferometry of 0.05 (±0.11), with immersion ultrasound of 0.01 (±0.10); calculated power with partial optical coherence interferometry of 23.02 D (±1.37), with immersion ultrasound of 22.90 D (±1.35); postoperative spheric refraction of -0.18 D (± 0.28).
The concordance between the axial length measured by partial optical coherence interferometry and immersion ultrasound was clinically significant (p<0.005). Patients with postoperative spheric equivalents and cilindric refractions more negative correlated with those patients with preoperative keratometric cilinder close to -1.00 D.

Conclusions : The trifocal AcrySof® IQ PanOptix™ intra-ocular lens is one of the best options for patients who want to stop depending on glasses after cataract surgery. As it's new technology, the constant given by the manufacturer is fixed, and variability depends on the surgeon experience and postoperative data recorded. We should select patients with preoperative keratometric cilinders smaller than 0.50 D. Both biometric methods are highly realiable for IOL power calculation.

This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.

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