There are also various words referring to eyepieces with darkened lenses:

Sun spectacles is a term used by some opticians.

Spekkies is a term used predominantly in southern Australia.

Sun specs (also sunspecs) is the shortened form of the above term.

Sunglasses is a term in common usage in Britain and North America, and it is also used when preceded by “pair of”.

Sun-shades can also refer to the sun-shading eyepiece-type, although the term is not exclusive to these. Also in use is the derivative abbreviation, shades.

Dark glasses (also preceded by ‘pair of’) - generic term in common usage.

Sunnies is Australian slang.

Smoked Spectacles usually refers to the darkened eyepieces worn by blind people.