Enlarged (Dilated) Pupils And Jerking Eye Movements

Reviewed on 1/23/2023

Enlarged or dilated pupils can be seen in the presence of low light conditions. Abnormally dilated pupils that do not respond to light can also be a side effect of certain drugs and medications. Jerking eye movements typically arise due to problems in the inner ear or within the brain itself. Dilated pupils that do not respond to light or unevenly dilated pupils can be a sign of stroke or head injury. Seek immediate medical attention for the sudden onset of dilated pupils that do not respond to light. Always report worrisome symptoms to a doctor.

While the list below can be considered as a guide to educate yourself about these conditions, this is not a substitute for a diagnosis from a health care provider. There are many other medical conditions that also can be associated with your symptoms and signs. Here are a number of those from MedicineNet:

At MedicineNet, we believe it is important to take charge of your health through measures such as a living healthy lifestyle, practicing preventative medicine, following a nutrition plan, and getting regular exercise. Understanding your symptoms and signs and educating yourself about health conditions are also a part of living your healthiest life. The links above will provide you with more detailed information on these medical conditions to help you inform yourself about the causes and available treatments for these conditions.

Symptoms & Signs A-Z List