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Clinical Trial Summary

The purpose of this study is to determine whether pretarsal and preseptal techniques of Botulinum toxin type A injection have any effect on tear functions.


Clinical Trial Description

Botulinum toxin type A has been used for hemifacial spasm since 1986. of Botulinum toxin type A can be subcutaneously injected at pretarsal or preseptal portion of orbicularis muscle. Blepharoptosis has been reported less frequently with pretarsal technique, however dry eye was noticed in one patient treated with pretarsal botulinum toxin type A for cosmetic purpose. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT01564979
Study type Interventional
Source Khon Kaen University
Contact kitthisak kitthaweesin, ND
Phone 6643348383
Email kitthisak@hotmail.com
Status Unknown status
Phase Phase 2
Start date April 2012
Completion date December 2012

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