J Korean Ophthalmol Soc.  1996 May;37(5):850-853.

Unilateral Eyelid Retraction Induced by The Postural Change from Supine to Sitting position

• Hwang JM
• Kim TW

Abstract

Simultaneous contraction of various muscles with levator palpebrae have been reported as a phenomenon of the paradoxic synkinesis. The authors observed an unilateral eyelid retraction induced by the postural change from supine to sitting position in a 33-month-old girl and a 4-year-old boy. In both cases, the levator function of both eyes was normal and ptosis was not observed. These cases were presumed to be related with postural righting reflex, but the exact neurological basis is not fully defined yet.

Keyword

The postural change from supine to sitting position; Eyelid retraction; Paradoxic synkinesis; Postural righting reflex

MeSH Terms

Child, Preschool
Eyelids*
Female
Humans
Male
Muscles
Reflex, Righting
Synkinesis