Visual Acuity And Contrast Sensitivity Defocus Curves With An Ipad Application

To generate visual acuity defocus curve (VADC) and contrast sensitivity defocus curve (CSDC) with an iPad application and compare defocus curves of multifocal intraocular lens (MFIOL) and monofocal intraocular lenses (IOL).

Marmara University School of Medicine,Department of Ophthalmology

Sixteen eyes from 8 patients implanted with the multifocaI intraocular lens (MFIOL, Tecnis Synergy, Johnson & Johnson Vision, USA) and 18 eyes from 9 patients implanted with the monofocal IOL were included. Binocular VADC and CSDC were measured using the Multifocal Lens Analyzer 3.0 (Qvision Academy) application designed for iPad devices. Best-corrected visual acuity was determined for each patient, and a +0.50 D lens was added to the trial frame to correct the vergence distance. Measurements were performed according to the application instructions, and automatically calculated the area under the curve (AUC) of VADC and CSDC at distance, intermediate, and near.

The AUC of VADC (MFIOL; 0.53 ± 0.13, Monofocal IOL; 0.53 ± 0.18) and CSDC (MFIOL; 1.12 ± 0.37, Monofocal IOL; 1.15 ± 0.37) at distance were similar between the groups (p>0.05).  The AUC of both VADC and CSDC were higher in the MFIOL group compared to the IOL group at intermediate (VADC AUC: MFIOL; 0.86 ± 0.24, Monofocal IOL; 0.53 ± 0.20 p=0.018, CSDC AUC: MFIOL; 1.31 ± 0.43, Monofocal IOL; 0.82 ± 0.37 p=0.034) and near (VADC AUC: MFIOL; 0.66 ± 0.22, Monofocal IOL; 0.08 ± 0.11 p<0.001, CSDC AUC: MFIOL; 0.99 ± 0.33, Monofocal IOL; 0.01 ± 0.02 p<0.001) distances.

The performance of MFIOL was shown to be similar to monofocal IOL at distance and better at intermediate and near with a user-friendly iPad application, which is a promising and standardized method.