sand-blind vs purblind

sand-blind and purblind both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sand-blind	No	Yes	No	No
purblind	No	Yes	No	No

As adjectives, sand-blind and purblind are synonyms defined as:

Other synonyms of sand-blind include dim-sighted, near-blind, visually challenged, visually impaired.

sand-blind (adjective)	purblind (adjective)
having greatly reduced vision	having greatly reduced vision
	lacking in insight or discernment