Jan Smithers as Bailey Quarters, from WKRP in Cincinnati (circa 1980).
In more outgoing times, even the shy types wanted to connect with others, leading them to wear glasses with large inviting frames. Something like the awkward but well-meaning girl in the freshman dorm leaving her door open in the hopes that someone will drop by and interact with her.
Contrast with the narrow, beady-eyed glasses that are preferred by the mousier introverts of today (and during the last cocooning era as well, epitomized by the cat eye glasses of the '50s).
Some pictures from back when "geek chic" aimed to look welcoming rather than repellent: