For individuals with normal retinal function, there is, unfortunately, no way to develop superhero grade night vision.
Conversely, for patients with decreased night vision or “nyctalopia”, as a result of dietary vitamin a deficiency
, vitamin a supplementation will hopefully restore normal human grade night vision. Patients with degenerative conditions such as retinitis pigmentosa, unfortunately, lose night vision and peripheral vision
from progressive photoreceptor loss. Patients with congenital stationary night blindness
, cone/rod dystrophies and other degenerative disorders also have photoreceptor loss with loss of night vision. Although until now there hasn’t been much to offer these patients, research is currently underway investigating a large array of agents which may offer them some hope for the future.