Definition

A condition where the eyes move rapidly and uncontrollably, often making it difficult to focus on objects.

Example

The doctor diagnosed her with nystagmus after observing her eye movements.

Conversation

Have you ever heard of nystagmus?

Yeah, isn't that the condition where the eyes move uncontrollably?

Exactly! It can make it hard for people to focus on things.

That's interesting; I wonder what causes it.

Synonyms & Antonyms

Root Explanation

Nystagmus → It is derived from the Greek word "nystagmos" (meaning a nodding or drowsiness) which comes from "nystazein" (meaning to nod). The term describes an involuntary eye movement that resembles a nodding motion.

Memory Tip

Imagine eyes that are 'nodding' ('nystagmos') back and forth involuntarily — that's what nystagmus refers to.

Visually Confused Words