| Palpebral fissure | |
|---|---|
 |
|
| Front of left eye with eyelids separated to show medial canthus. (Palpebral fissure, visible but not labeled, is artificially widened.) | |
| Latin | rima palpebrarum |
| Gray's | subject #227 1025 |
Palpebral fissure is the anatomic name for the separation between the upper and lower eyelids. In the adult this measures about 10mm vertically and 30 mm horizontally.
It can be reduced in horizontal size by fetal alcohol syndrome.[1] In Trisomy 9 the palpebral fissures can be upslanting.[2]
The fissure may be increased in vertical height in Graves' disease, which is manifested as Dalrymple's sign.
See also
References
- ^ "UNSW Embryo- Abnormal Development - Fetal Alcohol Syndrome". http://embryology.med.unsw.edu.au/Defect/page5a.htm. Retrieved 2007-12-23.
- ^ Kannan TP, Hemlatha S, Ankathil A, Zilfalil BA. Clinical manifestations in trisomy 9. (2009) Indian J Pediatr PMID: 19475342
External links
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