  A large portion of today's world population suffer from vision impairments
and wear prescription eyeglasses. However, eyeglasses causes additional bulk
and discomfort when used with augmented and virtual reality headsets, thereby
negatively impacting the viewer's visual experience. In this work, we remedy
the usage of prescription eyeglasses in Virtual Reality (VR) headsets by
shifting the optical complexity completely into software and propose a
prescription-aware rendering approach for providing sharper and immersive VR
imagery. To this end, we develop a differentiable display and visual perception
model encapsulating display-specific parameters, color and visual acuity of
human visual system and the user-specific refractive errors. Using this
differentiable visual perception model, we optimize the rendered imagery in the
display using stochastic gradient-descent solvers. This way, we provide
prescription glasses-free sharper images for a person with vision impairments.
We evaluate our approach on various displays, including desktops and VR
headsets, and show significant quality and contrast improvements for users with
vision impairments.
