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 based on Corneal Light Reflex position

  1. Normal (No Strabismus)
    1. Reflex falls on nasal portion of each Cornea
  2. Esodeviation
    1. On Deviated eye, reflex displaced lateral or temporal
  3. Exodeviation
    1. On deviated eye, reflex displaced medially

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