10/08/2026
On World Sight Day, we’re focusing on this optokinetic drum from the Museum’s collections. Optometrists and pediatric ophthalmologists used this device to assess the eye health of young children and other patients who cannot speak.
When the drum is held up and spun, a reflex called optokinetic nystagmus should kick in, causing a patient’s eyes to “skip” back and forth as they track the objects. Dysfunction in the optokinetic nystagmus reflex can indicate vision problems or neurological issues.
To learn more about this collections item, search no F1993.550 using the link in our bio.