Assessment of intermediate and near vision after bag in the lens cataract surgery: preliminary results.

Purpose To assess the intermediate and near vision after bag in the lens cataract surgery.
Methods We will include 76 eyes of 38 patients who underwent bilateral bag in the lens cataract surgery at least 3 months ago. Exclusion criteria are a best corrected distance visual acuity < 1.0 or any other ocular pathology which may warrant a lower vision. During their follow-up visit following parameters will be assessed: monocular and binocular uncorrected and corrected distance visual acuity (UDVA/CDVA) at 4 meters, monocular and binocular uncorrected and corrected intermediate visual acuity (UIVA/DCIVA) at 66 centimeters and monocular and binocular uncorrected and corrected near visual acuity (UNVA/DCNVA) at 40 centimeters. We will perform a monocular defocus curve and aberrometry and test the binocular photopic visual contrast sensitivity and reading speed at intermediate distance. Subjective visual functioning will be tested by the NEI VFQ-25 and PRSIQ questionnaires.
Results So far 13 patients (26 eyes) have been included out of the envisaged 38. The mean monocular DCIVA is log 0,26 and binocular 0,19. The mean monocular DCNVA is log 0.50 and binocular log 0,55.
Conclusion The unique placement of a monofocal BIL IOL avoids the risk of posterior capsular opacification and capsular phimosis, provides controlled IOL centration and easier exchangeability. Furthermore this study may show an increased potential for intermediate and near vision compared to monofocal lens in the bag IOL's making it a cheaper alternative to multifocal IOL's without their disadvantages.