|Title||Portable vision simulator for visual evaluation of binocular presbyopic corrections|
|Author, Co-Author||Aiswaryah Radhakrishnan, Carlos Dorronsoro, Susana Marcos|
Purpose: Multifocal lenses, monovision and modified monovision corrections are increasingly used for near vision restoration in Presbyopia. We evaluated the usefulness of a newly developed binocular portable vision simulator, based on temporal multiplexing of different foci, for evaluating non-invasively, perceptual and visual performance with binocular combinations of presbyopic corrections.
Methods: The binocular vision simulator was used to optically induce 17 binocular corrections: 3 binocular Monofocal (Far F+F, Intermediate I+I and Near N+N); 4 binocular Simultaneous Vision (SV) (Trifocal and Bifocal); 2 Monovision (MV), 8 Modified MV (Monofocal+SV). Intermediate and near additions were +1.5 and +3 D, respectively. A scoring task was performed by 8 subjects for all corrections and preference was assessed using 2AFC for 36 pairs of 9 corrections (SV, MV and modified MV). Composite realistic scene was created at far (poster @4m), intermediate (laptop @0.6m) and near (smartphone @0.3m) distances for psychophysical tasks.
Results: The perceptual score varied maximally for monofocal corrections (Score range of 4.5) followed by modified MV (3), MV (0.9) and SV (0.8), across distances, and it was significantly correlated with the percentage of energy at the tested distance (R=0.64, p
|Affiliation of Co-Authors||Institute of Optics, CSIC, Institue of Optics, CSIC|