OptoDrum is an easy to use replacement for a bulky optokinetic drum or a fraying cloth tape to elicit optokinetic nystagmus for evaluation of neurological, otological, and opthalmological disorders.   Simply place the iPhone with a moving pattern in front of a patient’s eye to elicit the response.  The stripe pattern, width, and speed are easily adjustable.

OptoDrum provides five patterns:  black stripes, red stripes, mixed colors, symbols, and animals.


• Drag a finger up or down the screen to make the pattern move at the speed of your finger.


• Double tap the moving pattern to make it stop.


• Pinch or zoom the pattern with two fingers to narrow or widen the stripes or symbols.


• A left or right finger swipe switches a stopped pattern to the next one in rotation.

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Linsay Associates, LLC.

Apps for the iPad, iPhone, and iPod touch

Questions or comments, please contact us

Animal icons created by VisualPharm

Our companion app, OptoDrumVideo, displays all the same patterns and also takes video of the elicited eye movements.