When Prompto stumbles, It’s Noctis who will catch him or pick him up. Sometimes he’ll even warp to his side to do so.
They’ll sit together when camping and Noctis will describe what he sees in great detail for Prompto to visualize.
Knowing that Prompto can’t see very well anymore, Noctis takes it upon himself to help with his hair.
Prompto makes it a point to listen more now, and sometimes he can even tell when Noctis feels bad by his breathing. He’s getting scary good at it.
They lay within arms reach of each other while sleeping. So Noctis, should a nightmare strike, will be able to feel Prompto alive and still breathing. Prompto will sometimes wake up in a panic when everything is dark around him, before he remembers darkness is his new normal. It’s comforting to know he’s not alone in the dark with Noctis nearby.
Noctis will make it a point to say where he is out loud in relation to Prompto, so he knows which way to go when walking.
Noctis will take up his camera, and assist him in taking photos. He may not be able to see, but feeling the camera in his hands, guided by Noctis, makes him feel a bit more normal.
Imagine Final Fantasy 