Portable vision simulator for visual evaluation of binocular presbyopic corrections

Title Portable vision simulator for visual evaluation of binocular presbyopic corrections
Author, Co-Author Aiswaryah Radhakrishnan, Carlos Dorronsoro, Susana Marcos
Topic Functional Vision/Pediatrics
Program Number
Ballroom A-B
Instituto de Optica, Madrid

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

Conclusion: Monovision and modified monovision corrections tended to outperform other corrections tested using the portable simulator. This portable binocular vision simulator with large field of view (12 deg), is a useful clinical tool for systematic evaluation of presbyopia corrections.

Affiliation of Co-Authors Institute of Optics, CSIC, Institue of Optics, CSIC