time-wracked

Very old men occasionally attain a sort of spectral quality.  A face that age has made almost not human, but humanoid - yoda-like or otherwise.  In a hospital, this is nothing - the context so explains the transformation that there is nothing remarkable to it.  But walking past you on the sidewalk in the sunlight, basically strong and self-possessed, an old man like this really can seem an apparition, a vision, an angel.