Eye Movement, a Symptom of Sleep Deprivation

This page is the CodyCross answer for the clue below from A Sweet Life, Group 1081, Puzzle 5 (Turkish Delight).

Question is: Eye Movement, a Symptom of Sleep Deprivation

and the answer is: NYSTAGMUS

Word Meaning:

NYSTAGMUS — (biology, medicine) Rapid and excessive involuntary eye movement, usually lateral.

Definitions from Wiktionary.