When were glasses invented? What happened back then if your horse stepped on them? How is the digital age changing adults’ and kids’ vision? The first half of this special bonus episode about Optical Technology features the charmingly hilarious director of the Museum of the Eye in San Francisco, Jenny Benjamin. Then we bop over to Houston, Texas for the ultra-knowledgeable real-life optometrist, Dr. Nadia Sledge to chat about the importance of annual exams and where our eyesight is trending in the digital age. Also: dark Roman trivia, Downton Abbey fashion, how online eye tests overlook critical conditions, and how you would have survived in the past without spectacles.

Donations went to Onesight and the Museum of the Eye

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Other episodes you may enjoy: Ophthalmology (EYES), Medieval Codicology (WEIRD OLD MANUSCRIPT ART & MEMES & SNAILS), Experimental Archeology (OLD TOOLS/ATLATLS), Literary Olfactology (THE POLITICS OF SMELL), Proptology (THEATER & FILM PROPS), Disability Sociology (DISABILITY PRIDE), Funology (YES, FUN), Salugenology (WHY HUMANS REQUIRE HOBBIES)

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Editing by Mercedes Maitland of Maitland Audio Productions and Jake Chaffee

Managing Director: Susan Hale

Scheduling Producer: Noel Dilworth

Transcripts by Aveline Malek

Website by Kelly R. Dwyer

Theme song by Nick Thorburn