He went away upstairs. She saw him mount into the darkness, unseeing and unchanging. He did not know that the lamps on the upper corridor were unlighted.He went on into the darkness with unchanging step. She heard him in the bath-room.

Pervin moved about almost unconsciously in his familiar surroundings, dark though everything was. He seemed to know the presence of objects before he touched them. It was a pleasure to him to rock thus through a world of things, carried on the flood in a sort of blood-prescience. He did not think much or trouble much. So long as he kept this sheer immediacy of blood-contact with the substantial world he was happy, he wanted no intervention of visual consciousness.
In this state there was a certain rich positivity, bordering sometimes on rapture. Life seemed to move in him like a tide lapping, lapping, and advancing, enveloping all things darkly. It was a pleasure to stretch forth the hand and meet the unseen object, clasp it, and possess it in pure contact. He did not try to remember, to visualise. He did not want to. The new way of consciousness substituted itself in him.
Quotation: The Blind Man by D.H. Lawrence. Penguin, 2011.