Can constant nystagmus cause eye floaters? the nystagmus is caused by a inner ear disorder.

No: Nystagmus doesn't cause the floaters, but rather, it is caused by aging of the vitreous within your eye- a process called vitreous syneresis. Your eye movements shift the floaters so that you are probably aware of the small shadows that the floaters cause when you are in adequate ambient lighting.

Unlikely. Nystagmus : Is an involuntary movement of the eye. It can be seen in both normal and pathologic or disease states. It is unlikely that significant torsional or tractional forces exist in such movements such that floaters could be significantly worsened. Theoretically, it is possible to develop a separation of the vitreous while having nystagmus. Age is the real culprit with floaters.