Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Editor

Personal info

View

About

Terms

Javascript disabled

Please enable Javascript support in your browser to use this application.

Instructions on how to enable JavaScript on different browsers can be found here: http://www.google.com/support/bin/answer.py?answer=23852.

[edit this page]

Pirouzian, A. et al.

Inferior rectus pulley hindrance: a mechanism of restrictive hypertropia following lower lid surgery.

PURPOSE: This article describes a new mechanism of restrictive strabismus associated with inferior rectus (IR) pulley hindrance complicating lower eyelid surgery. METHODS: We studied five patients who developed hypertropia in infraduction after bilateral lower eyelid surgery. Complete ophthalmologic examination and multipositional, high-resolution orbital imaging by computed X-ray tomography (CT), or magnetic resonance imaging (MRI) was performed. Comparison was made with MRI in normal volunteers. RESULTS: There was restriction to passive infraduction of the involved eyes. Sagittal MRI images showed hindrance to normal posterior shift of the IR pulley from central to infraducted gaze. Intraoperative findings of contracture of the inferior fornix and dense fibrous scar tissue from the inferior orbital rim to the IR pulley complex correlated with restricted infraduction and imaging findings. Release of the scar tissues around the IR pulley improved infraduction, reducing or eliminating diplopia. CONCLUSION: Scar formation hindering anteroposterior travel of the IR pulley system is a novel mechanism of restrictive hypertropia in infraduction following lower eyelid surgery. This restrictive strabismus, the iatrogenic equivalent of retroequatorial myopexy, is distinct from paralytic strabismus and must be managed differently. Avoidance and treatment of this complication of lower eyelid surgery requires knowledge of anatomical relationship between the IR pulley and lower eyelid.[1]

References

Inferior rectus pulley hindrance: a mechanism of restrictive hypertropia following lower lid surgery. Pirouzian, A., Goldberg, R.A., Demer, J.L. Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus / American Association for Pediatric Ophthalmology and Strabismus. (2004) [Pubmed]

Annotations and hyperlinks in this abstract are from individual authors of WikiGenes or automatically generated by the WikiGenes Data Mining Engine. The abstract is from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.About WikiGenes Open Access Licence Privacy Policy Terms of Use apsburg

The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.