TY - RPRT TI - Contrast sensitivity loss in multiple sclerosis. Selectivity by eye, orientation, and spatial frequency measured with the evoked potential. AU - M J Kupersmith AU - W H Seiple AU - J I Nelson AU - R E Carr PY - 1984 UR - https://pubmed.ncbi.nlm.nih.gov/6724832/ ID - 6724832 ER -