By modifying the complicated wavefront of coherent light with a spatial light modulator, holographic display may rectify many refractive defects, produce high-resolution images, and enable focus cues. It could be advantageous to have a hologram rendering used in any situation using rapid and accurate calculations.
Researchers developed a vision-correcting holographic display with hologram acquisition based on a physical model of the optics and a human eye. The new method allows for the correction of both on-axis and off-axis monochromatic ocular aberrations and optical system aberrations.
The researchers compared the holographic corrections to other traditional vision correction modes and used user studies to see how they affected visual acuity. To do so, they created a holographic near-eye display prototype with a light engine and an autorefractor, and they sped up the entire hologram calculation to reflect the user’s prescription as assessed on-site. The findings of user tests show how holographic displays can benefit users with refractive problems and offer suggestions on improving the user experience.