From the Research
Appearance of the Eyes During a Seizure
- The eyes may exhibit conjugate and contralateral deviation to the hemisphere of seizure onset, as seen in 100% of focal-onset seizures 1.
- The eye movements can be saccadic, with a predominant vector in an oblique upward direction, occurring in 89.3% and 86.8% of seizures, respectively 1.
- Tonic eye deviation may also be present, offering clues in clinically subtle seizures 2.
- Nystagmus, characterized by slow phases and quick phases, can occur during seizures, as reported in a patient with stereotyped focal seizures 3.
Reactivity of the Eyes During a Seizure
- The eyes may not be reactive during a seizure, as the deviation is often forced and involuntary, such as in versive seizures 1, 4.
- However, the reactivity of the eyes during a seizure is not explicitly stated in the provided studies, and more research may be needed to fully understand this aspect.
- It is worth noting that the appearance and reactivity of the eyes during a seizure can vary depending on the type and location of the seizure, as well as individual patient factors 1, 4, 3, 2, 5.