skip to content
Dovepress - Open Access to Scientific and Medical Research
View our mobile site

8852

Overriding of the preseptal orbicularis oculi muscle in Caucasian cadavers

Original Research

(2799) Views  (663) Full article downloads

Authors: Hirohiko Kakizaki, Weng Onn Chan, Yasuhiro Takahashi, Dinesh Selva

Published Date March 2009 Volume 2009:3 Pages 243 - 246
DOI: http://dx.doi.org/10.2147/OPTH.S4876

Hirohiko Kakizaki1,2, Weng Onn Chan2, Yasuhiro Takahashi3, Dinesh Selva2

1Department of Ophthalmology, Aichi Medical University, Nagakute, Aichi, Japan; 2South Australian Institute of Ophthalmology and Discipline of Ophthalmology and Visual Sciences, University of Adelaide, Australia; 3Department of Ophthalmology and Visual Sciences, Osaka City University Graduate School of Medicine, Osaka, Japan

Abstract: We aimed to microscopically examine whether Caucasian eyelids demonstrate overriding of preseptal orbicularis oculi muscle (OOM) over the pretarsal OOM in both lower and upper eyelids. Full thickness sections of 13 lower eyelids and 11 upper eyelids from seven Caucasian cadavers were examined. In the lower eyelids, all 13 specimens demonstrated clear overriding of preseptal OOM over the pretarsal OOM. The overriding part extended almost to the level of lower eyelid margin. However, in the upper eyelids, only one of the 11 eyelids demonstrated overriding, and the overriding part only extended to the level of mid-tarsal plate. Our result strongly supports the hypothesis of overriding of the preseptal OOM over the pretarsal OOM as an etiology of involutional lower eyelid entropion. The relatively low frequency of upper eyelid overriding preseptal OOM in our study reflects and may explain the rare occurrence of involutional upper eyelid entropion.

Keywords: Caucasian, overriding, orbicularis oculi muscle, preseptal, pretarsal




 

Other articles by Professor Hirohiko Kakizaki

Absence of lateral palpebral raphe in Caucasians
Course of the vertical portion of the lower lacrimal canaliculus
Double motion of upper eyelids in Graves’ orbitopathy: an additional sign for detection of thyroid dysfunction or positive thyroid autoantibodies
Eyelash inversion in epiblepharon: Is it caused by redundant skin?
Inferior displacement of the lower eyelid during intraoperative quantification in blepharoptosis surgery
Inferior oblique muscle thickness in Asians
Severe anterior uveitis associated with idiopathic dacryoadenitis in diabetes mellitus patient
The importance of rim removal in deep lateral orbital wall decompression
The rate of symptomatic improvement of congenital nasolacrimal duct obstruction in Japanese infants treated with conservative management during the 1st year of age


Readers of this article also read:

Periosteoplasty for covering gingival recessions: Clinical results
Radiolucency below the crown of mandibular horizontal incompletely impacted third molars and acute inflammation in men with diabetes
Role of aliskiren in cardio-renal protection and use in hypertensives with multiple risk factors
Information technology in pharmacovigilance: Benefits, challenges, and future directions from industry perspectives
Enucleation following treatment with intravenous pentamidine for Acanthamoeba sclerokeratitis
Solid self-nanoemulsifying cyclosporin A pellets prepared by fluid-bed coating: preparation, characterization and in vitro redispersibility
Improvement of adenoviral vector-mediated gene transfer to airway epithelia by folate-modified anionic liposomes
Hepatotoxicity due to tocilizumab and anakinra in rheumatoid arthritis: two case reports
Cumulative clinical experience from over a decade of use of levofloxacin in community-acquired pneumonia: critical appraisal and role in therapy
Erratum