What does PERRLA (pupils equal, round, reactive to light and accommodation) and EOMI (extra‑ocular movements intact) mean? | Rounds What does PERRLA (pupils equal, round, reactive to light and accommodation) and EOMI (extra‑ocular movements intact) mean? | Rounds
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What does PERRLA (pupils equal, round, reactive to light and accommodation) and EOMI (extra‑ocular movements intact) mean?

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Ocular Examination Abbreviations

PERRLA describes pupils that are equal, round, and reactive to light and accommodation.
EOMI describes extra-ocular movements that are intact.

PERRLA

  • Pupils equal: the right and left pupils are of similar size.
  • Pupils round: the pupils have a round shape.
  • Reactive to light: constriction occurs in response to a light stimulus.
  • Reactive to accommodation: constriction and lens accommodation occur when focusing from a distance target to a near target.

EOMI

  • Extra-ocular movements intact: eye movements through standard directions of gaze occur without limitation.
  • Associated clinical implication: absence of restricted gaze or major ocular motor palsy on exam.

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