A portable simultaneous vision device simulating multifocal corrections, published in Optica (Optical Society of America).
Multifocal lenses are increasingly used solutions for presbyopia, the age-related loss of crystalline lens focus ability. These lenses work by the principle of simultaneous vision, superimposing focused and defocused images on the retina. Providing the experience of simultaneous vision to a patient before permanent implantation of a multifocal lens is a recognized unmet need to increase the patient’s confidence and optimize the lens selection. In this study we developed a hand-held, see-through multifocal vision simulator based on temporal multiplexing of a tunable lens. After calibration and validation of the device, we measured nine patients with three monofocal, two bifocal, and two trifocal simulated corrections. Visual performance and perceptual quality with multifocal corrections varied across patients. The simultaneous vision simulator proved a promising compact tool to study visual performance with multifocal corrections and to select the lens design best suited for each patient, alternative to costly and bulky adaptive optics based devices.
The study has been published in Optica, a high impact journal of the Optical Society of America.
Carlos Dorronsoro, Aiswaryah Radhakrishnan, José Ramón Alonso-Sanz, Daniel Pascual, Miriam Velasco-Ocana, Pablo Pérez Merino y Susana Marcos. Portable simultaneous vision device to simulate multifocal corrections. Optica. DOI: 10.1364/OPTICA.3.000918