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Visual Fixation

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  1. General
    1. Child fixates on an object and follows movement
  2. Indication
    1. Test for Amblyopia
    2. Nonverbal or Preverbal children
    3. Infants over age 3 months can perform this test
  3. Technique
    1. Child sitting in parent's lap
    2. Interesting object presented at arms length
      1. Young Infants: examiner's face or penlight
      2. Older infants to toddlers: toys or bright colors
    3. Move object through child's fields of gaze
      1. Repeat procedure with one eye covered
    4. Avoid frightening child when covering eye
      1. Use thumb or parent's hand
  4. Interpretation: Amblyopia present
    1. Child consistently cries when good eye covered
    2. Does not protest when amblyopic eye is covered
  5. References
    1. Berson (1987) Ophthalmology Study Guide, AAO, p. 106
    2. Essman (1992) Am Fam Physician 46(4):1243
    3. Mills (1999) Am Fam Physician 60(3):907
    4. Simon (2001) Am Fam Physician 64(4):623

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