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Differences in contrast sensitivity between intraocular lenses without and with yellow filter

Poster Details

First Author: I.Caral SPAIN

Co Author(s):    J. Soldevila   C. Jurjo   V. Huerva              

Abstract Details

Purpose:

To determine if intraocular lens (IOL) with yellow filter reduces contrast sensitivity with regard to the unfiltered IOL under mesopic lighting conditions.

Setting:

Hospital Universitari Arnau de Vilanova, Lleida, Spain

Methods:

It is an ambispective observational cross-sectional study with 56 pseudophakic eyes. Two groups were included: 31 eyes with implantation of a yellow-tinted IOL; and 25 eyes with implantation of a yellow-untinted IOL. The dependent variable of the study was the contrast sensitivity, being the independent variable the type of IOL.

Results:

There were no statistically significant differences, using the non-parametric Mann Whitney U test, between the two studied groups (without and with yellow filter) in relation to contrast sensitivity at all spatial frequencies. There were differences in median, obtaining equal values ​​at frequencies of 3, 12 and 18 c / g (cycles per degree) and higher values ​​belonging to the untinted IOL at frequencies of 0.75, 1.5 and 6 c / g.

Conclusions:

Contrast sensitivity is not altered by the yellow filter, although the median values ​​in three of the six spatial frequencies are in favor of untinted IOL. Further studies with a larger sample should be carried out to confirm or not this hypothesis.

Financial Disclosure:

NONE

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