PROBLEM TO BE SOLVED: To provide a nystagmus imaging apparatus easily mounted and dismounted to Frenzel glasses, having light weight, and having no hindrance to ocular movement observation.SOLUTION: The nystagmus imaging apparatus for mounting on a front surface of a lens of the Frenzel glasses includes a body part and an adapter part. The body part is provided with a camera module through an eyepiece and has memory slot of a flash memory. A photographed moving image can be stored in the flash memory. The adapter part is mountable to at least one eye of the Frenzel glasses.