NOSA BOGO Offer on Interactive Digital Textbooks


We are excited to announce an exclusive Buy One Get One Free discount on interactive iBook textbooks from Ridgevue Publishing that is now available for NOSA members.

These advanced digital textbooks incorporate videos, term definitions and flashcards to create the richest learning experience possible. The available iBooks cover a wide range of subjects including Optics, Binocular Vision, Contact Lenses and more.

The iBooks can be used on all Apple devices, but are not compatible with PC’s and Android devices.


To receive this exclusive offer follow these steps

1) Purchase any iBook priced at $29.99 or above from the Ridgevue Publishing catalog.

2) Choose a second iBook (of equal or lesser price) to receive for free.

3) Email your Apple receipt to and state which iBook you’d like to receive for free.

  • You can choose to receive a second copy of the same iBook and give it to a friend.

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