My dad has quite a severe spot where his retina detached in the one eye. Right in the centre of his vision. He reports it looking like a visible hole with surr

My dad has quite a severe spot where his retina detached in the one eye. Right in the centre of his vision. He reports it looking like a visible hole with surrounding distortion. Apparently similar to some renderings of black holes. That said, this is a large defect in the centre of vision - it's pretty much un-interpolatable. I understand smaller defects not in the macula just get interpolated away.