Sentence:  If the patient can perceive figure kinesthetically when he cannot perceive it visually , then , it would seem , the sense of touch has immediate contact with the spatial aspects of things in independence of visual representations , <WSD>at</WSD> least in regard to two dimensions , and , as we shall see , even this much spatial awareness on the part of unaided touch is denied by the authors . 
Meaning of the word marked with <WSD> tags:  if nothing else (`leastwise' is informal and `leastways' is colloquial)