This is a dog eye model. It includes lenses for explaining lens diseases such as cataracts, with 5 other lenses representing different conditions. The explanatory notes are not in a booklet, but printed on the outside of the box. The photographer was reflected in the lenses, so a complete model with the cornea (plastic) and lenses in place could not be photographed head-on. The first photo was taken from a slightly higher angle. The eighth photo shows all the parts disassembled. Thank you for looking. You can take it apart and examine the inside. You can change the lenses. The box is 21cm x 20cm x 21cm and has some dirt and tears from storage. It's a rare item. It clearly shows the similarities between humans and dogs, making it suitable for education for elementary school students and older. #Biology #Anatomy #HumanModel #Dog #Model #EyeModel #Cataracts