September 2016
Volume 57, Issue 12
Open Access
ARVO Annual Meeting Abstract  |   September 2016
Correlation of subjective and objective outcomes in a diffractive trifocal IOL, a case series.
Author Affiliations & Notes
  • Ivo Ferreira-Rios
    School of Pharmacy, Instituto Conde de Valenciana I.A.P., Mexico city, DF, Mexico
  • Eduardo Chávez Mondragón
    School of Pharmacy, Instituto Conde de Valenciana I.A.P., Mexico city, DF, Mexico
  • Footnotes
    Commercial Relationships   Ivo Ferreira-Rios, None; Eduardo Chávez Mondragón, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science September 2016, Vol.57, 1307. doi:
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      Ivo Ferreira-Rios, Eduardo Chávez Mondragón; Correlation of subjective and objective outcomes in a diffractive trifocal IOL, a case series.. Invest. Ophthalmol. Vis. Sci. 2016;57(12):1307.

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      © 2017 Association for Research in Vision and Ophthalmology.

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Purpose : In the controversy regarding the subjective and objective performance of the latest trifocal IOLs, we performed a study to evaluate if there is a relationship between them in the latest trifocal diffractive IOL Physiol of Finevision.

Methods : Prospective non-interventional study of 24 eyes of patients 12 undergoing bilateral cataract surgery with implantation of Physiol trifocal IOL. We analysed uncorrected distance visual acuity (UDVA), uncorrected near visual acuity (UNVA) at 70, 60, 50, 40 and 30 cm at 1, 2 and 3 months.
With a OPD Scan III Software we performed aberrometry measuremnts of: higher-order root mean-square (RMS) and Point Spread Function (PSF) with the Strehl Ratio . Bilateral contrast sensitivity was obtained with Modulation Transfer Function (MTF). We measured the distance between the visual axis and the center of the IOL.
The subjective outcomes were obtained from the VFQ-25 questionnaire and a second questionnaire made by our research team.
We did a descriptive analysis of our data, we performed Kolmogorov-Smirnov analysis to demonstrate normal distribution of our data and then we used Pearson Correlation to find the correlation between our objective and subjective variables.

Results : Mean monocular UNVA was logMar 0.06 +/- 0.07.
Spherical equivalent was at 3 months of the surgery 0.52 +/- 0.47.
Mean high order RMS was 0.07 microns and mean strehl ratio was 0.38. Contrast sensitivity in MTF was within a range of normal distribution and the score for the VFQ- 25 was global of 91.03. The results of the questionnaire made by our research team was in the range of very good.
We found our data has a normal distribution with a good correlation between UDVA (r = 0.89)UNVA (r = 0.72)the Strehl ratio (r = 0.76)and the center of the IOL (r = 0.70)with a good score in both questionnaires.

Conclusions : We found a strong correlation in our objective and subjective outcomes with some of variables we studied, so we can conclude that if we can do a good selection of patients and perform an excellent technique in our surgery to control perfectly the objective variables we can predict to have excellent subjective outcomes with our patients.

This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.


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