Synonyms for Purblind (same or very similar meaning)
WordNet sense 1 (having greatly reduced vision):
dim-sighted, near-blind, sand-blind, visually challenged, visually impairedWordNet sense 2 (unable to see):
unsightedWordNet sense 3 (lacking in insight or discernment):
obtuseWordNet sense 4 (lacking discernment):
undiscerningFrom the ODE community, based on WordNetadd/edit