Incorporation of the area under the fast visual acuity defocus curve in clinical practice for detecting differences among multifocal intraocular lenses

Session Details

Session Title: Biometry & Quality of Vision

Session Date/Time: Tuesday 25/09/2018 | 08:00-10:30

Paper Time: 09:18

Venue: Room A2

First Author: : M.Rodriguez Vallejo SPAIN

Co Author(s): :    A. Tauste   E. Lopez-Artero   A. Matamoros   A. Martinez-Amat   F. Poyales   J. Fernandez     

Abstract Details

Purpose:

To evaluate the visual acuity (VA) agreement at far, intermediate and near distances with the corresponding defocus lenses (DLs) obtained from fast visual acuity defocus curves (FVADC) and to assess the sensitivity of these metrics in comparison to area under the FVADC for detecting differences among multifocal intraocular lenses (MIOLs)

Setting:

Qvision, Ophthalmology Department Vithas Virgen del Mar Hospital, Almería, Spain.

Methods:

119 subjects implanted with 5 different MIOLs were retrospectively analyzed. Variables included FVADC measured from +1.00 D to -4.00 D in 0.50 D steps and the ETDRS chart at far, intermediate (67 cm) and near (40 cm) distances. The agreement between DLs of 0 D, -1.5 D and -2.5 D was assessed in comparison with the ETDRS at far, 67 cm and 40 cm, respectively. The differences among MIOLs were evaluated with the previous metrics in comparison with the area under the FVADC in different ranges of vision.

Results:

The agreement between DLs and ETDRS resulted in 96.6% of eyes within 1 line of difference at far distance, 84.9% at intermediate, and 93.3% at near. No significant differences among MIOLs were found in the total area under the FVADC and at far distance with all the methods. DLs showed less accuracy than ETDRS detecting differences among MIOLs at intermediate or near vision, but the area under the VADC was the most sensitive metric for detecting these differences.

Conclusions:

DLs from FVADC showed a good agreement with the ETDRS with a high percentage of eyes within a 1 line of VA. Our results are not in agreement with the only previous published paper that reported overestimation of defocus curves in comparison to proximal VA. On the other hand, our results are in agreement with previous authors who reported the highest sensitivity of the area under the VADC for detecting differences among MIOLs. New technologies such as FVADC can help to incorporate the metric of area under the VADC in the clinical practice.

Financial Disclosure:

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