Eye

Palpebral Fissure Finding

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Palpebral Fissure Finding, Downslanting Palpebral Fissure, Upslanting Palpebral Fissure, Short Palpebral Fissure, Narrow Palpebral Fissure

  • Definition
  1. Palpebral Fissure
    1. Eliptical opening between the eye lids
    2. Normally 1 cm high by 3 cm wide in adults
  2. Downslanting Palpebral Fissure
    1. http://elementsofmorphology.nih.gov/index.cgi?tid=1c4dc8688933b9ef
    2. Downsloping lie of the eye opening with the medial canthus appearing higher than the lateral canthus
    3. With both eyes affected, a line drawn from each lateral canthus to medial canthus meeting at the Nasal Bridge, will form a "^" appearance
  3. Upslanting Palpebral Fissure
    1. http://elementsofmorphology.nih.gov/index.cgi?tid=f103f00fcb26b7c4
    2. Upsloping lie of the eye opening with the medial canthus appearing lower than the lateral canthus
    3. With both eyes affected, a line drawn from each lateral canthus to medial canthus meeting at the Nasal Bridge, will form a "V" appearance
  4. Short Palpebral Fissure
    1. http://elementsofmorphology.nih.gov/index.cgi?tid=8ea165ff88fe04c3
    2. Narrow eye openings with a decreased distance between the medial and lateral canthus
  • Causes
  • Upslanting Palpebral Fissure (V-shaped eye orientation) examples
  1. Trisomy 21 (Down Syndrome)
  2. Trisomy 9
  3. Microcephaly
  4. Prader-Willi Syndrome
  • Causes
  • Downslanting Palpebral Fissure (^-shaped eye orientation) examples
  1. Marfan Syndrome
  2. Sotos Syndrome
  3. Lennox-Gastaut Syndrome
  4. Ehlers-Danlos Syndrome
  • Causes
  • Short Palpebral Fissure (narrow eye opening) examples
  1. Fetal Alcohol Syndrome
  2. Williams Syndrome
  3. DiGeorge Syndrome