II. Indications: Strabismus Testing

  1. Differentiate true deviation from pseudostrabismus (due to wide Nasal Bridge or epicanthal folds)
  2. In uncooperative child, only test of alignment

III. Technique

  1. Hold penlight at arms length in front of child
  2. Gain child's attention blink/tap light
  3. When child fixated on light
    1. Examiner lines up light with her eyes
    2. Note position of Corneal Light Reflex on each eye

IV. Interpretation

  1. Based on Corneal Light Reflex position
  2. Normal (No Strabismus)
    1. Reflex falls on nasal portion of each Cornea
  3. Esodeviation
    1. On Deviated eye, reflex displaced lateral or temporal
  4. Exodeviation
    1. On deviated eye, reflex displaced medially
  5. Pseudostrabismus (due to wide Nasal Bridge or epicanthal folds)
    1. One pupil will appear more medial (turned in) than the other
    2. However, each light reflection will be centered over each pupil or in the same position as the contralateral side

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