This informative textbook by Francis Valk, published in 1897, covers the topic of errors of refraction and their correction with glasses. Written in English, it is a valuable resource for optometrists and those interested in the subject area of eyes. The publication name is "Errors of Refraction and their Correction with Glasses".

The book falls under the category of Textbooks, Education & Reference and is perfect for those seeking knowledge about optometry. With its detailed information and insights about the subject, this textbook will enhance any reader's understanding of eyes and their correct treatment.

Note in photos that item is used and shows lots of wear from handling and storage.  Binding has damage but all pages appear to be present.